EXPLAINER: A look at toughest US sanctions facing Putin


              Russian President Vladimir Putin addresses the nation in the Kremlin in Moscow, Russia, Monday, Feb. 21, 2022. Russia's Putin has recognized the independence of separatist regions in eastern Ukraine, raising tensions with West. (Alexei Nikolsky, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks about Ukraine in the Roosevelt Room of the White House, Friday, Feb. 18, 2022, in Washington. (AP Photo/Alex Brandon)