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.
Central Committee of the Communist Party of the Soviet Union
At the 19th Conference, the first since 1941, Mikhail Gorbachev called for the establishment of Commissions of the Central Committee to allow Central Committee members more leeway in actual policy implementation. On 30 September 1988, a Central Committee Resolution established six Commissions, all of which were led either by Politburo members or Secretaries. The Commission on International Affairs was led by Alexander Yakovlev; Yegor Ligachev led the Commission on Agriculture; Georgy Razumovsky led the Commission on Party Building and Personnel; Vadim Medvedev became head of the Commission on Ideology; the Commission of Socio-economic Questions was led by Nikolay Slyunkov; and Viktor Chebrikov became the head of the Commission on Legal Affairs. The establishment of these commissions was explained in different ways, but Gorbachev later claimed that they were established to end the power struggle between Yakovlev and Ligachev on cultural and ideological matters, without forcing Ligachev out of politics. Ligachev, on the other hand, claimed that the commissions were established to weaken the prestige and power of the Secretariat. The number of meetings held by the Secretariat, following the establishments of the commissions, decreased drastically, before the body was revitalised following the 28th Party Congress (2 July 1990 – 13 July 1990) (see "Secretariat" section).