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
25th Congress of the Communist Party of the Soviet Union or fight other countries, but also stated that he would support national liberation movements, despite détente. Little mention was made of fundamental problems facing the Soviet Union— the slowdown of the rate of economic growth, the low output of agriculture despite heavy investment. The only critical voices raised were those of foreign Communists. French Communist leader Georges Marchais boycotted the congress after criticizing the Soviet Union's suppression of dissidents. A major problem that faced Soviet leaders, and one that was continually evaded, was the need to rejuvenate the Politburo, which was elected at the 1st Plenary Session of the 25th