Prime ministership of Mir-Hossein Mousavi between Mousavi, who belonged to the left wing of the Islamic Republic, with Ali Khamenei (the current leader of Iran), who belonged to the right wing of the Islamic Republic, continued during their eight years of shared governance. However, an escalation in conflicts between the two led to Mousavi's resignation shortly after the end of the Iran–Iraq War in 1988. As the prime minister, Mousavi had the full backing of Ruhollah Khomeini, the supreme leader, and he refused to accept his resignation. Mousavi is remembered as leading a government that did not tolerate dissent. Mousavi's premiership coincided with the Iran–Iraq
2009 Iranian presidential election movement attempted to unite behind a single candidate; former President Mohammad Khatami was the leading opponent to Ahmadinejad in some opinion polls, until he withdrew and endorsed former Prime Minister Mir-Hossein Mousavi. Former Speaker of the Majlis Mehdi Karroubi, another Reformist, was also running; as was the former commander of the Iranian Revolutionary Guard, Mohsen Rezaee, a conservative with a reputation for political pragmatism. The election marked a return to public spotlight for Mousavi, who had not received much attention since he served as Prime Minister in the 1980s. Reformist opinions galvanized around him as the election grew nearer. He