A Soviet politician and revolutionary who led the Soviet Union from 1924 until his death in 1953. He held power as General Secretary of the Communist Party from 1922 to 1952 and as the fourth premier from 1941 until his death. He initially governed as part of a collective leadership, but consolidated power to become an absolute dictator by the 1930s. Stalin codified the party's official interpretation of Marxism as Marxism–Leninism, while the totalitarian political system he created is known as Stalinism.