TOPSHOT - A serviceman of Ukrainian Military Forces looks out from his tank prior to the battle with Russian troops and Russia-backed separatists in Lugansk region on March 8, 2022. - The number of refugees flooding across Ukraine's borders to escape towns devastated by shelling and air strikes passed two million, in Europe's fastest-growing refugee crisis since World War II, according to the United Nations. (Photo by Anatolii Stepanov / AFP)