Seyyed Ali Hosseini Khamenei is the Supreme Leader of the Islamic Republic of Iran, a position he has held since 1989. Born on July 17, 1939, in Mashhad, Iran, he was a prominent figure during the Iranian Revolution of 1979, which led to the establishment of the current political system. Khamenei previously served as the President of Iran from 1981 to 1989. As Supreme Leader, Khamenei has significant influence over all branches of government, the military, and the media. He is also the head of the Islamic Revolutionary Guard Corps and plays a crucial role in shaping Iran's foreign policy, particularly regarding relations with the United States and Israel.