The deputy supreme leader of the Islamic Republic of Iran, officially the Deputy Supreme Leadership Authority, was the deputy to the Supreme Leader, the highest authority in the Islamic Republic of Iran. The position was created by the Assembly of Experts in July 1985 due to the special circumstances of the Iran–Iraq War and the worsening physical condition of the supreme leader Ruhollah Khomeini. The only officeholder is Hussein-Ali Montazeri as there have been no other officeholders since his resignation in 1989.