De-Stalinization refers to the process of eliminating the cult of personality, Stalinist political system and the Gulag labour-camp system created by Soviet leader Joseph Stalin. Stalin was succeeded by a collective leadership after his death in March 1953. The central Soviet strongmen at the time were Lavrentiy Beria, head of the Ministry of the Interior; Nikita Khrushchev, First Secretary of the Central Committee of the Communist Party of the Soviet Union (CPSU); and Georgi Malenkov, Premier of the Soviet Union.

Some contemporary historians regard the process of de-Stalinisation as a significant turning point in the history of modern Russia.

De-Stalinization spelled an end to the role of large-scale forced labour in the economy. The process of freeing Gulag prisoners was started by Beria, but he was soon removed from power. Khrushchev then emerged as the most powerful Soviet politician.

At a speech On the Personality Cult and its Consequences to the closed session of the Twentieth Party Congress of the CPSU, February 25, 1956, Khrushchev shocked his listeners by denouncing Stalin's dictatorial rule and cult of personality. He also attacked the crimes committed by associates of Lavrentiy Beria.

Nikita Sergeyevich Khrushchev (April 15 [O.S. April 3] 1894, – September 11, 1971) led the Soviet Union during part of the Cold War. He served as First Secretary of the Communist Party of the Soviet Union from 1953 to 1964, and as Chairman of the Council of Ministers, or Premier, from 1958 to 1964. Khrushchev was responsible for the partial de-Stalinization of the Soviet Union, for backing the progress of the early Soviet space program, and for several relatively liberal reforms in areas of domestic policy. Khrushchev's party colleagues removed him from power in 1964, replacing him with Leonid Brezhnev as First Secretary and Alexei Kosygin as Premier.

Khrushchev was born in the Russian village of Kalinovka in 1894, close to the present-day border between Russia and Ukraine. He was employed as a metalworker in his youth, and during the Russian Civil War was a political commissar. With the help of Lazar Kaganovich, he worked his way up the Soviet hierarchy. He supported Joseph Stalin's purges, and approved thousands of arrests. In 1939, Stalin sent him to govern Ukraine, and he continued the purges there. During what was known in the Soviet Union as the Great Patriotic War (Eastern Front of World War II), Khrushchev was again a commissar, serving as an intermediary between Stalin and his generals. Khrushchev was present at the bloody defense of Stalingrad, a fact he took great pride in throughout his life. After the war, he returned to Ukraine before being recalled to Moscow as one of Stalin's close advisers.

Joseph Vissarionovich Stalin (Russian: Иосиф Виссарионович Сталин; born Iosif Vissarionovich Dzhugashvili, Russian: Иосиф Виссарионович Джугашвили; 18 December 1878 – 5 March 1953) was the Premier of the Soviet Union from 6 May 1941 to 5 March 1953. He was among the Bolshevik revolutionaries who brought about the October Revolution in Russia in 1917 and later held the position of General Secretary of the Communist Party of the Soviet Union's Central Committee from 1922 until his death in 1953. While the office of the General Secretary was officially elective and not initially regarded as the top position in the Soviet state, Stalin managed to use it to consolidate more and more power in his hands after the death of Vladimir Lenin in 1924 and gradually put down all opposition groups within the Communist Party. This included Leon Trotsky, a socialist theorist and the principal critic of Stalin among the early Soviet leaders, who was exiled from the Soviet Union in 1929. Whereas Trotsky was an exponent of permanent revolution, it was Stalin's concept of socialism in one country that became the primary focus of Soviet politics.

Kim Il-sung (15 April 1912 – 8 July 1994) was the leader of the Democratic People's Republic of Korea, commonly referred to as "North Korea", from its establishment in 1948 until his death in 1994. He held the posts of Prime Minister from 1948 to 1972 and President from 1972 to his death. He was also the leader of the Workers' Party of Korea from 1949 to 1994 (titled as chairman from 1949 to 1966 and as general secretary after 1966).

His tenure as leader of North Korea has often been described as autocratic, and he established an all-pervasive cult of personality. From the mid-1960s, he promoted his self-developed Juche variant of communist national organization, which later replaced Marxism-Leninism as the ideology of the state in 1972. In the Library of Congress Country Study on North Korea in 2009, he was described as "one of the most intriguing figures of the twentieth century". He outlived Joseph Stalin by four decades, Mao Zedong by two, and remained in power during the terms of office of six South Korean presidents, 7 Soviet leaders, ten U.S. presidents, and twenty-one Japanese prime ministers.