List of leaders of the Soviet Union
Following Joseph Stalin's consolidation of power in the 1920s, the post of the General Secretary of the Central Committee of the Communist Party became synonymous with leader of the Soviet Union, because the post controlled both the Communist Party and the Soviet Government, both indirectly, via Party membership, and via the tradition of a single person holding two highest posts: in the Party and in the government. The post of the General Secretary was abolished in 1952 under Stalin and later re-established by Nikita Khrushchev under the name of First Secretary. In 1966, Leonid Brezhnev reverted the office title to its former name. Being the head of the Communist Party of the Soviet Union (CPSU), the office of the General Secretary was the highest in the Soviet Union until 1990. The post of General Secretary lacked clear guidelines of succession, so after the death or removal of a Soviet leader the successor usually needed the support of the Politburo, the Central Committee, or another government or party apparatus to both take and stay in power. The President of the Soviet Union, an office created in March 1990, replaced the General Secretary as the highest Soviet political office.
History of the Communist Party of the Soviet Union
The 20th Congress of the CPSU held in 1956 marked the party's formal break with Stalin (three years after his death) when First Secretary Nikita Khrushchev gave his famous "Secret Speech" denouncing the crimes and excesses of Stalin. This ushered in a period of destalinisation which saw an end to the personality cult which had grown around Stalin, the release of tens of thousands of political prisoners and a thaw in political and cultural discourse. This was too much for conservatives in the Presidium (the renamed Politburo). Malenkov, Kaganovich, Molotov and Bulganin attempted to oust Khrushchev in the summer of 1957 and won a vote in the Presidium to oust Khrushchev but Georgy Zhukov the defence minister and war hero, supported Khrushchev's demands that the matter be sent to the Central Committee which overturned the Presidium vote. Khrushchev ousted the so-called Anti-Party Group from the Presidium and ultimately from the party and, in 1958 became Premier while retaining the position of First Secretary.