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Russia says it won’t start a war as Ukraine tensions mount

An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) President Joe Biden speaks to reporters as he arrives at Andrews Air Force Base, Md., Friday, Jan. 28, 2022. (AP Photo/Andrew Harnik) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Secretary of Defense Lloyd Austin speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) An Ukrainian serviceman looks around as he leaves a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman pats a dog sitting in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, a Russian howitzer fires during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Lithuania's Minister of National Defence Arvydas Anusauskas speaks during a press conference in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) Ukrainian servicemen check their position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian sniper poses for a photo before moving to a position on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman walks to his position in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) A Ukrainian serviceman prepares ammunitions in a shelter on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - A Ukrainian soldier takes part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) A military police officer stands in front of a Danish Royal Air Force F-16 fighter jet during the welcome ceremony for the reinforcement of the NATO Air Policing Mission at the Siauliai military air force base some 230 km (144 miles) east of the capital Vilnius, Lithuania, Friday, Jan. 28, 2022. As tensions build with Russia, NATO is focused on defending its 30 member countries. (AP Photo/Mindaugas Kulbis) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk) Ukrainian servicemen walk in a trench on the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) In this photo taken from video provided by the Russian Defense Ministry Press Service on Friday, Jan. 28, 2022, Russian troops fire howitzers during drills in the Rostov region during a military exercising at a training ground in Rostov region, Russia. (Russian Defense Ministry Press Service via AP) Secretary of Defense Lloyd Austin turns to Joint Chiefs Chairman Gen. Mark Milley as he speaks during a media briefing at the Pentagon, Friday, Jan. 28, 2022, in Washington. (AP Photo/Alex Brandon) In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks during a news conference in Kyiv, Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (Ukrainian Presidential Press Office via AP) Olga, one of the 16 residents still living in a frontline village, holds a rabbit speaking to journalists at her house's yard not far from the front line in the Luhansk region, eastern Ukraine, Friday, Jan. 28, 2022. High-stakes diplomacy continued on Friday in a bid to avert a war in Eastern Europe. The urgent efforts come as 100,000 Russian troops are massed near Ukraine's border and the Biden administration worries that Russian President Vladimir Putin will mount some sort of invasion within weeks. (AP Photo/Vadim Ghirda) CORRECTS THAT NLAW ARE ANTI-TANK AND NOT ANTI-AIRCRAFT MISSILES - Ukrainian soldiers take part in an exercise for the use of NLAW anti-tank missiles at the Yavoriv military training ground, close to Lviv, western Ukraine, Friday, Jan. 28, 2022. British defense secretary Ben Wallace told the U.K. had already delivered 2,000 NLAWs to Ukraine, a number he indicated might continue to rise. The missiles were London's way of providing defensive aid to Kyiv as Russian forces deploying around Ukraine's borders give the impression a new invasion may be imminent. (AP Photo/Pavlo Palamarchuk)