The Russian invasion of Ukraine that began on February 24 has led to Europe's largest refugee crisis since World War II. Since the crisis began, at least 4,521 civilian casualties have been reported in the country, including 1,932 killed, with actual numbers likely much higher.Attacks continue on the cities of Kharkiv and Mariupol, with shelling also reported in Luhansk, Kharkiv, Donetsk and southern Kherson oblasts. The situation in Mariupol remains catastrophic, with 130,000 people still trapped in the city. Though the security situation in northern Ukraine is reportedly improving, 96,000 people across the east are still without electricity, and water has been cut off in Popasna, Rubizhne and Sievierodonetsk. Many people trapped in affect...