Adolf Hitler was a German politician and leader of the Nazi Party. He rose to power as Chancellor of Germany in 1933 and later Führer in 1934. During his dictatorship from 1933 to 1945, he initiated World War II in Europe by invading Poland in September 1939.
Joseph Stalin was a Georgian revolutionary and Soviet politician who led the Soviet Union from the mid–1920s until 1953 as General Secretary of the Communist Party of the Soviet Union (1922–1952) and Premier (1941–1953).
Mao Zedong was a Chinese communist revolutionary who was the founding father of the People's Republic of China, which he ruled as the Chairman of the Communist Party of China from its establishment in 1949 until his death in 1976.
Kim Jong-il was the second Supreme Leader of North Korea, from the death of his father Kim Il-sung, the first Supreme Leader, in 1994 until his own death in 2011.