The Russian President Vladimir Putin ordered a full-scale invasion of Ukraine on Feb. 24, 2022. The Russian offensive triggered the largest refugee crisis since the Second World War. Thousands of people, including many civilians, have died in the war amid heavy fighting in the north, east, and south of Ukraine. The country is home to the Ukrainian Greek Catholic Church, the largest of the 23 Eastern Catholic Churches in communion with Rome. Pope Francis has said that the Vatican is willing to mediate an end to the conflict between the predominantly Eastern Orthodox nations.