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
Iranian Reformists However, neither made it to the second round of the election (the final runoff): Moin came in fifth and Karroubi third in the first round. As a result, many supporters of the reform movement lost hope and did not participate in the election. The two leading reformist candidates in the 2009 presidential election were Mir-Hossein Mousavi and Mehdi Karroubi. Mousavi supporters disbelieved the election results and initiated a series of protests that lasted several days. After many days of protesting against the election results, the protests eventually turned violent as the Basij (loyal police to the Islamic Republic) started attacking