Following the ouster of Soviet-backed Afghan President Mohammad Najibullah in 1992, Hekmatyar was at first inclined to become part of the Interim government. But due to the involvement of many international powers (US, UK, and France in particular) in intra-Afghan dialogues and strong disagreements between different Mujahideen groups over many Government Posts and power-sharing in the interim Government, Hekmatyar stepped down from the interim Government as to him, International agencies (allegedly the CIA, MI6 and ISI) were preparing an unfair plan for power-sharing in the Government. And, that the dialogues were delay tactics to allow Massoud and his allies to advance to Kabul and seize the city. Hekmatyar then got engaged in the Afghan civil war in hope of capturing Kabul before Massoud. The civil war lead to the death of around 50,000 civilians in Kabul alone. Hekmatyar was accused in the west of bearing the most responsibility for the rocket attacks on the city, although Shia Militias, Doustum and Massoud's forces were already in fierce battle for the control of city, before Hekmatyar entered the war. In the meantime, as a part of the peace and power-sharing efforts led by Hekmatyar and Burhanuddin Rabbani, Hekmatyar became Prime Minister of Afghanistan from 1993 to 1994 and again briefly in 1996, before the Taliban takeover of Kabul forced him to leave Afghanistan to Iran's capital Tehran.