Support WBURRefugees from other wars see themselves in fleeing UkrainiansPlay11:04Download AudioMary Louise KellyConnor DonevanCourtney DorningMichael LevittMarch 22, 2022 SharePeople fleeing the war in Ukraine walk towards a humanitarian train on Friday in Krakow. More than 3.4 million people have left Ukraine since Russia began its invasion almost four weeks ago. (Getty Images)