Friends, the biggest leader in Iran is the supreme leader. In February 1979, the Islamic Revolution led by Iran's former religious leader Khomeini overthrew the Pahlavi dynasty and established the Islamic Republic of Iran. In December of that year, Iran held a referendum to adopt the first constitution after the establishment of the new regime. According to the constitution, Iran implements a political system in which politics and religion are unified and theocracy is above all else. The leader is the supreme leader of the Iranian country and is also a symbol of the unity of politics and religion in Iran. Leaders have great authority, including the appointment and removal of national leaders, including the president. They can remove the president if the president commits malfeasance or if the parliament deems the president politically incompetent. The current supreme leader of Iran is Ayatollah Ali Khamenei.