People light candles during the commemoration ceremony of the Nazi Germany's invasion of the Soviet Union in 1941 in Moscow, Russia, on June 21, 2018. Nazi Germany launched a blitz offensive against the Soviet Union on June 22, 1941, marking the start of the Soviet Union's Great Patriotic War, which saw some 27 million soldiers and civilians killed from 1941 to 1945. (Xinhua/Evgeny Sinitsyn)