VIENNA/WARSAW -- Over 3 million people have fled Ukraine since the Russian invasion, the United Nations High Commissioner for Refugees said Tuesday, as the rapidly growing crisis tests international cooperation.
More than 100,000 -- and sometimes over 200,000 -- refugees have left Ukraine daily since the war began Feb. 24. UNHCR describes the exodus as the "fastest growing refugee crisis in Europe since World War II" and predicts that 4 million or more ultimately will leave Ukraine.
