World Russian invasion of Ukraine could become ‘Europe’s largest refugee crisis this century’: Live updates March 1, 2022Celina Tebor, Joey Garrison and Tom Vanden Brook, USA TODAYComments Off on Russian invasion of Ukraine could become ‘Europe’s largest refugee crisis this century’: Live updates Hundreds of thousands of Ukrainians have fled the country as Russian forces escalated attacks on civilian areas of Ukraine's largest cities. Updates.