Secretariat of the Communist Party of the Soviet Union the CPSU, who was also a Politburo member, was the leader of the Secretariat and of the Party. Dual membership in the Secretariat and the Politburo was in practice reserved for two or three very senior members of the Soviet leadership, and in the post-Stalin era (after March 1953) was a stepping-stone to ultimate power. The last five Soviet leaders (Nikita Khrushchev, Leonid Brezhnev, Yuri Andropov, Konstantin Chernenko and Mikhail Gorbachev) were all senior Secretaries before becoming First or General Secretaries. Additionally, Georgy Malenkov was briefly reckoned as the leader of the Party for a week after Stalin's death by
Dissolution of the Soviet Union Dissolution of the Soviet Union The dissolution of the Soviet Union occurred on 26 December 1991, officially granting self-governing independence to the Republics of the Union of Soviet Socialist Republics (USSR). It was a result of the declaration number 142-Н of the Supreme Soviet of the Soviet Union. The declaration acknowledged the independence of the former Soviet republics and created the Commonwealth of Independent States (CIS), although five of the signatories ratified it much later or did not do so at all. On the previous day, 25 December, Soviet President Mikhail Gorbachev, the eighth and final leader of the USSR,