During the immediate postwar period, the Soviet Union first rebuilt and then expanded its economy, using resourcs stripped from defeated Germany. The Red Army imposed Communist political control over postwar Eastern Europe, except for Yugoslavia and Albania. The active Soviet foreign policy helped bring about the [[Cold War]], starting about 1947, which turned its wartime allies, Britain and the United States, into foes. Within the Soviet Union, repressive measures continued in force; Stalin apparently was about to launch a new purge when he died in 1953.
===Khrushchev===
see : [[Nikita Khrushchev]][[File:Khrush-1961.jpg|thumb|290px|Khrushchev liked to threaten and bully, often using "brinkmanship" (the threat of nuclear weapons); ''Time'' Sept. 8, 1961]] After three years of a join leadership, [[Nikita Khrushchev]] seized power, denounced Stalin's use of terror and effectively reduced repressive controls over party and society. Khrushchev's reforms in agriculture and administration, however, were generally unproductive, and foreign policy toward China and the United States suffered reverses. Khrushchev's colleagues in the leadership removed him from power in 1964.
After three years of a join leadership, [[Nikita Khrushchev]] seized power, denounced Stalin's use of terror and effectively reduced repressive controls over party and society. Khrushchev's reforms in agriculture and administration, however, were generally unproductive, and foreign policy toward China and the United States suffered reverses. Khrushchev's colleagues in the leadership removed him from power in 1964.
===Brezhnev ===
Following the ouster of Khrushchev, another period of rule by collective leadership ensued, which lasted until [[Leonid Brezhnev|Leonid I. Brezhnev]] established himself in the early 1970s as the preeminent figure in Soviet political life. Brezhnev presided over a period of détente with the West while at the same time building up Soviet military strength; the arms buildup contributed to the demise of [[détente]] in the late 1970s. Also contributing to the end of détente was the [[Soviet-Afghan War|Soviet invasion of Afghanistan]] in December 1979.