But this analysis is incorrect, if only because it exaggerates Ahmadinejad's importance and leaves out of the picture the country's single most powerful figure: Ali Khamenei, the supreme leader. The Iranian constitution endows the supreme leader with tremendous authority over all major state institutions, and Khamenei, who has held the post since 1989, has found many other ways to further increase his influence. Formally or not, the executive, legislative, and judicial branches of government all operate under the absolute sovereignty of the supreme leader; Khamenei is the head of state, the commander in chief, and the top ideologue. He also reaches into economic, religious, and cultural affairs through various government councils and organs of repression, such as the Revolutionary Guards, whose commander he himself appoints.