 In Moscow, Leonid Brezhnev was indecisive and waffled as he usually did when faced with a difficult decision.The three decision-makers in Moscow who pressed the hardest for an invasion in the fall of 1979 were the troika consisting of Foreign Minister Andrei Gromyko; the Chairman of KGB, Yuri Andropov and the Defense Minister Marshal Dmitry Ustinov.The principle reasons for the invasion was the belief in Moscow that Amin was a leader both incompetent and fanatical who had lost control of the situation together with the belief that it was the United States via Pakistan who was sponsoring the Islamist insurgency in Afghanistan.