Russia-Ukraine war: Key things to know about the conflict


              President Joe Biden talks with Cypriot President Nicos Anastasiades during a round table meeting at an EU summit in Brussels, Thursday, March 24, 2022. (AP Photo/Evan Vucci)
            
              In this image from video provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy speaks from Kyiv, Ukraine, early Friday, March 25, 2022. (Ukrainian Presidential Press Office via AP)
            
              U.S. President Joe Biden, second left, touches the shoulder of German Chancellor Olaf Scholz, left, as they arrive for a round table meeting at an EU summit in Brussels, Thursday, March 24, 2022. As the war in Ukraine grinds into a second month, President Joe Biden and Western allies are gathering to chart a path to ramp up pressure on Russian President Vladimir Putin while tending to the economic and security fallout that's spreading across Europe and the world. (AP Photo/Olivier Matthys)
Russia-Ukraine war: Key things to know about the conflict