Joseph Vissarionovich Stalin was a Georgian revolutionary and Soviet political leader who governed the Soviet Union from 1924 until his death in 1953. He served as both General Secretary of the Communist Party of the Soviet Union (1922–1952) and Chairman of the Council of Ministers of the Soviet Union (1941–1953). Despite initially governing the country as part of a collective leadership, he ultimately consolidated power to become the Soviet Union's dictator by the 1930s. A communist ideologically committed to the Leninist interpretation of Marxism, Stalin formalised these ideas as Marxism–Leninism while his own policies are known as Stalinism.