On December 24, 1979, the Soviet Union invaded Afghanistan and Kabul was heavily occupied by Soviet Armed Forces. In Pakistan, Director-General of the ISI Akhtar Abdur Rahman advocated for the idea of covert operation in Afghanistan by arming Islamic extremists who formed the mujahideen. General Rahman was heard loudly saying: ""Kabul must burn! Kabul must burn!"", and mastered the idea of proxy war in Afghanistan. Pakistani President Zia-ul-Haq authorized this operation under General Rahman, which was later merged with Operation Cyclone, a programme funded by the United States and carried out by the Central Intelligence Agency. Large protests against the Soviet presence broke out in Kabul in 1980 in what is called the 3 Hut uprising.