Mir-Hossein Mousavi parliament did not give him the vote of confidence, and he was defeated with a vote of 80 to 74. Although Khamenei had strong reservations with Mousavi, as a compromise with the left-leaning parliament, agreed to offer Mousavi for the post of premier. On 28 October 1981, with the approval of Khomeini, the parliament approved Mousavi with a vote of 115 to 39 to become the 79th prime minister of Iran on 31 October 1981. The conflicts between Mousavi, who belonged to the left wing of the Islamic Republic, with Ali Khamenei (the current leader of Iran), who belonged to
Iranian Green Movement a regular presidential election. Former Prime Minister Mir-Hossein Mousavi was the most popular candidate opposed to Ahmadinejad. The election took place on June 12, 2009 and rapidly caused the significant controversy caused by the disagreement between the government and the opposition over the results of the election. Ahmadinejad was considered to be winning in a landslide, but Mousavi and his supporters believed the results were fraudulent. They suggested that the Interior Minister Sadegh Mahsouli, an ally of Ahmadinejad, had interfered with the election and distorted the votes to keep Ahmadinejad in power. Mousavi claimed victory and called for his supporters