Politburo of the Communist Party of the Soviet Union in the context of "Joseph Stalin"

Kliment Yefremovich Voroshilov (Russian: Климент Ефремович Ворошилов pronounced; Ukrainian: Климент Охрімович Ворошилов, romanized: Klyment Okhrimovych Voroshylov), popularly known as Klim Voroshilov (Russian: Клим Ворошилов; 4 February 1881 – 2 December 1969), was a prominent Soviet military officer and politician during the Stalin era (1924–1953). He was one of the original five Marshals of the Soviet Union, the second highest military rank of the Soviet Union (junior to the Generalissimo of the Soviet Union, which was a post only held by Joseph Stalin), and served as Chairman of the Presidium of the Supreme Soviet, the nominal Soviet head of state, from 1953 to 1960.

Born to a Russian worker's family in Ukraine, Voroshilov took part in the Russian Revolution of 1917 as an early member of the Bolsheviks. He served with distinction at the Battle of Tsaritsyn, during which he became a close friend of Stalin. Voroshilov was elected to the Central Committee of the Communist Party in 1921, and in 1925 Stalin appointed him People's Commissar for Military and Navy Affairs (later People's Commissar for Defence). In 1926, he became a full member of the Politburo. In 1935, Voroshilov was named a Marshal of the Soviet Union.

Boris Nikolayevich Yeltsin (1 February 1931 – 23 April 2007) was a Russian politician and statesman who served as President of Russia from 1991 to 1999. He was a member of the Communist Party of the Soviet Union (CPSU) from 1961 to 1990. He later stood as a political independent, during which time he was viewed as being ideologically aligned with liberalism.

Yeltsin was born in Butka, Ural Oblast. Growing up in Kazan and Berezniki, he worked in construction after studying at the Ural State Technical University. After joining the Communist Party, he rose through its ranks, and in 1976, he became First Secretary of the party's Sverdlovsk Oblast committee. Yeltsin was initially a supporter of the perestroika reforms of Soviet leader Mikhail Gorbachev. He later criticized the reforms as being too moderate and called for a transition to a multi-party representative democracy. In 1987, he was the first person to resign from the Politburo of the Communist Party of the Soviet Union, which established his popularity as an anti-establishment figure and after which he earned the reputation of the leader of the anti-communist movement. In 1990, he was elected chair of the Russian Supreme Soviet and in 1991 was elected president of the Russian Soviet Federative Socialist Republic (RSFSR), becoming the first popularly-elected head of state in Russian history. Yeltsin allied with various non-Russian nationalist leaders and was instrumental in the formal dissolution of the Soviet Union in December of that year. With the dissolution of the Soviet Union, the RSFSR became the Russian Federation, an independent state. Through that transition, Yeltsin remained in office as president. He was later re-elected in the 1996 Russian presidential election, which critics assert was rigged.

Joseph Stalin, second leader of the Soviet Union, died on 5 March 1953 at his Kuntsevo Dacha after suffering a stroke, at age 74. He was given a state funeral in Moscow on 9 March, with four days of national mourning declared. On the day of the funeral, of the hundreds of thousands of Soviet citizens visiting the capital to pay their respects, at least 109 were later acknowledged to have died in a crowd crush.

Stalin's body was embalmed and interred in Lenin's Mausoleum until 1961, when it was moved to the Kremlin Wall Necropolis. The members of Stalin's inner circle in charge of organizing his funeral were Nikita Khrushchev, then-head of the Moscow branch of the Communist Party; Lavrentiy Beria, head of the NKVD; Georgy Malenkov, the chairman of the Presidium; and Vyacheslav Molotov, previously the Soviet Union's Minister of Foreign Affairs.

Collective leadership (Russian: коллективное руководство, kollektivnoye rukovodstvo), or collectivity of leadership (Russian: коллективность руководства, kollektivnost rukovodstva), became - alongside doctrine such as democratic centralism - official dogma for governance in the Union of Soviet Socialist Republics (USSR) and other socialist states espousing communism.In the Soviet Union itself, the collective leadership concept operated by distributing powers and functions among members of the Politburo and the Central Committee of the Communist Party of the Soviet Union, as well as the Council of Ministers, to hinder any attempts to create a one-man dominance over the Soviet political system by a Soviet leader, such as that seen under Joseph Stalin's rule between the late 1920s and 1953. On the national level, the heart of the collective leadership was officially the Central Committee of the Communist Party. Collective leadership was characterised by limiting the powers of the General Secretary and the Chairman of the Council of Ministers as related to other offices by enhancing the powers of collective bodies, such as the Politburo.

Collective leadership became institutionalised in the upper levels of control in the Soviet Union following Stalin's death in March 1953, and subsequent Soviet Communist Party leaders ruled as part of a collective. First Secretary Nikita Khrushchev criticized Stalin's dictatorial rule at the 20th Party Congress in 1956, but Khrushchev's own increasingly erratic decisions led to his ouster in 1964. The Party replaced Khrushchev in his posts with Leonid Brezhnev as First Secretary and with Alexei Kosygin as Premier. Though Brezhnev gained more and more prominence over his colleagues, he retained the Politburo's support by consulting its members on all policies. Collective leadership continued under Yuri Andropov (General Secretary from 1982 to 1984) and Konstantin Chernenko (General Secretary from 1984 to 1985). Mikhail Gorbachev's reforms espoused open discussion from about 1986, leading to members of the leadership openly disagreeing on how little or how much reform was needed to rejuvenate the Soviet system.

Joseph Stalin, the General Secretary of the Communist Party of the Soviet Union from 1922 to 1952 and Chairman of the Council of Ministers from 1941 until his death in 1953, governed the country as its General Secretary from the late 1920s until his death. He had initially been part of the country's informal collective leadership with Lev Kamenev and Grigory Zinoviev after the death of Vladimir Lenin in 1924, but consolidated his power within the party and state, especially against the influences of Leon Trotsky and Nikolai Bukharin, in the mid-to-late 1920s.

Prior to the October Revolution of 1917, Stalin was a revolutionary who had joined the Bolshevik faction of the Russian Social Democratic Labor Party (RSDLP) led by Vladimir Lenin, in 1903. In Lenin's first government, Stalin was appointed leader of the People's Commissariat of Nationalities. He also took military positions in the Russian Civil War and Polish-Soviet War. Stalin was one of the Bolsheviks' chief operatives in the Caucasus and grew closer to Lenin, who saw him as tough, loyal, and capable of getting things done behind the scenes. Stalin played a decisive role in engineering the 1921 Red Army invasion of Georgia. His successes in Georgia propelled him into the ranks of the Politburo in late 1921. At the 11th Congress of the Russian Communist Party (Bolsheviks) in 1922, the leaders decided to expand the party's Central Committee. This decision led to the creation of the office of the General Secretary which Stalin assumed on 3 April. Stalin soon learned how to use his new office to gain advantages over key persons within the party. He prepared the agenda for the Politburo meetings, directing the course of meetings. As General Secretary, he appointed new local party leaders, establishing a patronage network loyal to him.

Vyacheslav Mikhaylovich Molotov (né Skryabin; 9 March [O.S. 25 February] 1890 – 8 November 1986) was a Soviet politician, diplomat, and revolutionary. He was one of Joseph Stalin's closest allies and one of the most prominent figures in the Soviet government during his rule. In addition to serving as Chairman of the Council of People's Commissars from 1930 to 1941, he held office as Minister of Foreign Affairs from 1939 to 1949 and again from 1953 to 1956.

An Old Bolshevik, Molotov joined the Russian Social Democratic Labour Party in 1906 and was arrested and internally exiled twice before the October Revolution of 1917. He briefly headed the party's Secretariat before supporting Stalin's rise to power in the 1920s, becoming one of his closest associates. Molotov was made a full member of the Politburo in 1926 and became premier in 1930, overseeing Stalin's agricultural collectivization (and resulting famine) and his Great Purge. Following his appointment as Foreign Minister in 1939, he signed the Molotov–Ribbentrop Pact which led to the Soviet Union's joint occupation of Poland alongside Nazi Germany and its ensuing annexation of the Baltic states. During World War II, he became deputy chairman of the State Defense Committee as well as Stalin's main negotiator with the Allies. Upon the war's end in 1945, he began to lose favour, losing his ministership in 1948 before being criticized by Stalin at the 19th Party Congress in 1952.

The Central Committee of the Communist Party of the Soviet Union was the highest organ of the Communist Party of the Soviet Union (CPSU) between Congresses. Elected by the Congress, the Central Committee emerged as the core nexus of executive and administrative authority in the party, with de facto supremacy over the government of the Soviet Union. It was composed of full members and candidate (non-voting) members. Real authority was often concentrated in smaller, more agile organs elected by the Committee, namely the Politburo, Secretariat, and Orgburo (dissolved in 1952), as well as in the post of General Secretary. Theoretically a collective leadership, the Committee increasingly became a rubber-stamp institution, particularly from the late 1920s onward under the dominance of Joseph Stalin.

The Central Committee originated in the Russian Social Democratic Labor Party (RSDLP), established in 1898, and continued in the Bolshevik party, established in 1912. After the Bolsheviks seized power in the October Revolution of 1917, the Committee assumed a key leadership role, functioning both as a strategic body and a conduit for implementing party directives in the expanding Soviet state. Stalin used his control over personnel appointments to dominate the Committee and ensure ideological conformity, and during his rule the Committee's composition often reflected factional struggles, purges, and leadership reshufflings. During the Great Purge of 1936 to 1938, a significant portion of its members were executed or imprisoned.

Sergei Mironovich Kirov (born Kostrikov; 27 March 1886 – 1 December 1934) was a Russian and Soviet politician and Bolshevik revolutionary. Kirov was an early revolutionary in the Russian Empire and a member of the Bolshevik faction of the Russian Social Democratic Labour Party. Kirov became an Old Bolshevik and personal friend to Joseph Stalin, rising through the Communist Party of the Soviet Union ranks to become head of the party in Leningrad and a member of the Politburo.

On 1 December 1934, Kirov was shot and killed by Leonid Nikolaev at his offices in the Smolny Institute. Nikolaev and several alleged accomplices were convicted in a show trial and executed less than 30 days later. Kirov's assassination was used by Stalin as a reason for starting the Moscow trials and the Great Purge.