Prime ministership of Mir-Hossein Mousavi secret negotiations and dealing with USA on helping them free the American hostages in Lebanon, in return for sale of the American weapons and spare-parts that Iran's army badly needed for Iran–Iraq War. Shortly after the end of Iran–Iraq War on 20 August 1988, Ruhollah Khomeini died, and Ali Khamenei was elected as the new Supreme Leader by the Assembly of Experts. Following his death, Mousavi and his fellow left-wingers lost their main source of support within the establishment. During the parliament hearing on post-war reconstruction plans, Mousavi had heated arguments with Ali Akbar Hashemi Rafsanjani, the speaker of Iran's
Mir-Hossein Mousavi thousands of Iranians marched in defiance. Large numbers of protesters were arrested, and several were killed by the police and militia forces Basij. Neda Agha-soltan and Sohrab Aarabi were among the victims, and alleged cases of rape in prison (Taraneh Mousavi) were also uncovered. Since the election, the government has severely restricted the access of foreign and Iranian media to footage and information relating to opposition activities. As a result, scenes of the massive street protests and more frequent student protests have been filmed by participants themselves. Seyed Ali Mousavi was the nephew of Mousavi. Ali Mousavi died on 27