Ali Hosseini Khamenei (Persian: علی حسینی خامنه ای, Azerbaijani: سید علی حسینی خامنهای /Seyyid Əli Xameneyi pronounced ..born 17 July 1939) is the Supreme Leader of Iran and a Shia Marja'.] He had also served as the President of Iran from 1981 to 1989. In 2012, Forbes selected him 21st in the list of The World's Most Powerful People.
As the head of state, Khamenei is considered the most powerful political authority in Iran.Khamenei was the victim of an attempted assassination in June 1981 that paralyzed his right arm.] The biggest challenge to his leadership in recent years has been the 2009 Iranian election protestsfollowing the 2009 presidential elections during which he voiced support for President Mahmoud Ahmadinejad.