 The Soviet Union declared its plan to intervene in Afghanistan on 12 December 1979, and the Soviet leadership initiated Operation Storm-333 (the first phase of the intervention) on 27 December 1979.Amin remained trustful of the Soviet Union until the very end, despite the deterioration of official relations with the Soviet Union.When the Afghan intelligence service handed Amin a report that the Soviet Union would invade the country, and topple him, Amin claimed the report was a product of imperialism.