 In March 1992, President Mohammad Najibullah, having lost the Soviet Union support which upheld his government, agreed to resign and make way for a neutral interim government.Several mujahideen parties started negotiations to form a national coalition government.But one group, the Hezb-e Islami Gulbuddin led by Gulbuddin Hekmatyar, presumably supported and directed by Pakistan's Inter-Services Intelligence (ISI), did not join the negotiations and announced to conquer Kabul alone.