EXPLAINER: How US is expanding aid to Ukrainian refugees


              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              President Joe Biden speaks about the Russian invasion of Ukraine during a news conference after a NATO summit and Group of Seven meeting at NATO headquarters, Thursday, March 24, 2022, in Brussels. (AP Photo/Evan Vucci)
            
              A refugee fleeing the war from neighbouring Ukraine hugs her dog after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              A refugee fleeing the war from neighbouring Ukraine walks with children holding toys after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)
            
              Refugees fleeing the war from neighbouring Ukraine walk after crossing the border by ferry at the Isaccea-Orlivka border crossing in Romania, Thursday, March 24, 2022. (AP Photo/Andreea Alexandru)