Josef Stalin, born Ioseb Jugashvili, was the dictator of the Soviet Union from the mid-1920s until his death in 1953, known for his brutal regime and the establishment of Stalinism. His rule included significant events such as the Great Terror, World War II, and significant changes in Soviet agriculture and industry through collectivization and five-year plans. Stalin's policies led to widespread famine, political purges, and the establishment of a strict communist regime, while his influence shaped the post-war era and the onset of the Cold War.