History of the Soviet Union (1964–82) Soviet Union "would result in a crushing retaliatory blow". Though Brezhnev's time in office would later be characterized as one of stability, early on, Brezhnev oversaw the replacement of half of the regional leaders and Politburo members. This was a typical move for a Soviet leader trying to strengthen his power base. Examples of Politburo members who lost their membership during the Brezhnev Era are Gennady Voronov, Dmitry Polyansky, Alexander Shelepin, Petro Shelest and Podgorny. Polyansky and Voronov lost their membership in the Politburo because they were considered to be members of the "Kosygin faction." In their place came Andrei
Military history of the Soviet Union the territories populated mostly by ethnic Belarusians and Ukrainians. Next, Soviet Union sent ultimatums to the Baltic states and gained control in September and October. The Soviet Union had negotiated with the Finns for over a year, but they refused Soviet demands, and the Red Army assaulted on 30 November 1939 starting the Winter War. Simultaneously, a puppet regime, called the Finnish Democratic Republic, was set by the Soviets. The initial period of the resulting war proved disastrous for the Soviet military. As a direct result of the Soviet aggression the Soviet Union was expelled from the League of Nations