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
Mostafa Kavakebian 2000. He was the leader of the 'Popular Reformist Coalition' that to running on 2004 and 2008 legislative election. He was a member of reformist faction in the Parliament. He founded Popular Coalition of Supporters of Mir-Hossein Mousavi in the 2009 Iranian presidential election. Before he founded his party, he was the deputy leader of the 'Unity Party'. He is also the editor-in-chief of "Mardomsalari" newspaper. He was seeking to keep his seat in the 2012 election as leader of the Democratic Coalition of Reformists, but was not elected. On 25 January 2013, Kavakebian was nominated as a candidate for