General Secretary of the Communist Party of the Soviet Union
In the 1950s, Stalin increasingly withdrew from Secretariat business, leaving the supervision of the body to Georgy Malenkov, possibly to test him as a potential successor. In October 1952, at the 19th Party Congress, Stalin restructured the party's leadership. His request, voiced through Malenkov, to be relieved of his duties in the party secretariat due to his age, was rejected by the party congress, as delegates were unsure about Stalin's intentions. In the end, the congress formally abolished Stalin's office of General Secretary, though Stalin remained one of the party secretaries and maintained ultimate control of the Party. When Stalin died on 5 March 1953, Malenkov was the most important member of the Secretariat, which also included Nikita Khrushchev, among others. Under a short-lived troika of Malenkov, Beria, and Molotov, Malenkov became Chairman of the Council of Ministers but was forced to resign from the Secretariat nine days later on 14 March, leaving Khrushchev in effective control of the body. Khrushchev was elected to the new office of First Secretary at the Central Committee plenum on 14 September of the same year. Originally conceived as a collective leadership, Khrushchev removed his rivals from power in both 1955 and (especially) 1957 and reinforced the supremacy of the First Secretary.
Valerian Kuybyshev
In 1920 Kuybyshev was elected a member of Presidium of the Red International of Trade Unions, which charged him with the implementation of the GOELRO plan. From 6 July 1923 to 5 August 1926 he was the first economical inspector of the USSR. From 1926 to 1930 he chaired the Supreme Council of the National Economy, from 1930 to 1934 he directed Gosplan, and he served as a full member of the Politburo from 1934 until his death. As a principal economic advisor to Joseph Stalin, he was one of the most influential members in the Communist Party. He was awarded the Order of the Red Banner. Kuybyshev was one of the initiators of the first edition of the "Great Soviet Encyclopedia" and was a member of its chief editorial board.