History of the Soviet Union (1964–82) Brezhnev remained wary of any sort of intervention and Kosygin reminded leaders of the consequences of the Soviet suppression of the 1956 Hungarian revolution. In the aftermath of the invasion the Brezhnev Doctrine was introduced; it stated that the Soviet Union had the right to intervene in any socialist country on the road to communism which was deviating from the communist norm of development. The doctrine was condemned by Romania, Albania and Yugoslavia. As a result, the worldwide communist movement became poly-centric, meaning that the Soviet Union lost its role as 'leader' of the world communist movement. In the aftermath
Hero of the Soviet Union bronze bust of his or her likeness with a commemorative inscription erected in his or her hometown. Two famous Soviet fighter pilots, Aleksandr Pokryshkin and Ivan Kozhedub were three times Heroes of the Soviet Union. A third award entitled the recipient to have his/her bronze bust erected on a columnar pedestal in Moscow, near the Palace of the Soviets, but the Palace was never built. After his release from serving a 20-year sentence in a Mexican prison for the assassination of Leon Trotsky, Ramon Mercader moved to the Soviet Union in 1961 and was awarded the Hero of the Soviet