The Government of the Islamic Republic of Iran (Persian: نظام جمهوری اسلامی ایران, romanized: Nezâm-e Jomhuri-ye Eslâmi-ye Irân), known simply as Nezam (Persian: نظام, romanized: Nezâm, lit. 'the system'), is the national government of Iran.
Its constitution, adopted by a referendum, calls for separation of powers, with executive, legislative and judicial systems. The supreme leader of Iran is the country's head of state and commander-in-chief of the armed forces.
Iran and Israel have had no diplomatic relations since 1979, and modern relations are hostile. The relationship was cordial for most of the Cold War, but worsened following the Iranian Revolution and has been openly hostile since the end of the Gulf War in 1991. Iran's current government does not recognize Israel's legitimacy as a state and has called for its destruction; it views Palestine as the sole legitimate government of the historic Palestinian territories. Israel considers Iran a threat to the Middle East's stability and has targeted Iranian assets in assassinations and airstrikes. In 2025, the hostility escalated to an armed conflict.
In 1947, Iran was among 13 countries that voted against the United Nations Partition Plan for the British Mandate of Palestine. Two years later, Iran also voted against Israel's admission to the United Nations. However, Iran was the second Muslim-majority country to recognize Israel as a sovereign state after Turkey. After the 1953 coup d'état, which reinstalled the pro-Western leader Mohammad Reza Pahlavi as the shah of Iran, relations between the two countries significantly improved. After the Iranian revolution—in which Pahlavi was ousted and Iran's secular monarchy was replaced by an anti-Western Islamic republic—Iran severed diplomatic and commercial ties with Israel, although relations continued covertly during the Iran–Iraq War (1980–1988).
The supreme leader of Iran, also referred to as the supreme leader of the Islamic Revolution, but officially called the supreme leadership authority, is the head of state and the highest political and religious authority of Iran (above the president). The armed forces, judiciary, state radio and television, and other key government organizations such as the Guardian Council and Expediency Discernment Council are subject to the supreme leader. According to the constitution, the supreme leader delineates the general policies of the Islamic Republic (article 110), supervising the legislature, the judiciary, and the executive branches (article 57). The current lifetime officeholder, Ali Khamenei, has issued decrees and made the final decisions on the economy, the environment, foreign policy, education, national planning, and other aspects of governance in Iran. Khamenei also makes the final decisions on the amount of transparency in elections, and has dismissed and reinstated presidential cabinet appointees.
The office was established by the Constitution of Iran in 1979, pursuant to Ayatollah Ruhollah Khomeini's concept of the Guardianship of the Islamic Jurist, and is a lifetime appointment. Originally the constitution required the supreme leader to be Marja'-e taqlid, the highest-ranking cleric in the religious laws of Usuli Twelver Shia Islam. In 1989, however, the constitution was amended and simply asked for Islamic "scholarship" to allow the supreme leader to be a lower-ranking cleric. As the Guardian Jurist (Vali-ye faqih), the supreme leader guides the country, protecting it from heresy and imperialist predations, and ensuring the laws of Islam are followed. The style "Supreme Leader" (Persian: رهبر معظم, romanized: rahbar-e mo'azzam) is commonly used as a sign of respect although the Constitution designates them simply as "Leader" (رهبر, rahbar). According to the constitution (Article 111), the Assembly of Experts is tasked with electing (following Ayatollah Khomeini), supervising, and dismissing the supreme leader. In practice, the Assembly has never been known to challenge or otherwise publicly oversee any of the supreme leader's decisions (all of its meetings and notes are strictly confidential). Members of the Assembly are elected by people in elections, and are approved by bodies (the Guardian Council) whose members are appointed by the supreme leader or appointed by an individual (Chief Justice of Iran) appointed by the supreme leader.
Ruhollah Khomeini's life in exile was the period that Grand Ayatollah Ruhollah Khomeini spent from 1964 to 1979 in Turkey, Iraq and France, after Mohamed Reza Shah Pahlavi had arrested him twice for dissent from his “White Revolution” announced in 1963. Ayatollah Khomeini was invited back to Iran by the government, and returned to Tehran from exile in 1979.
On 4 November 1964, Khomeini was secretly taken to Ankara and then to Bursa, Turkey. On 5 September 1965, he moved to Najaf, Iraq and stayed there until Saddam Hussein deported him in 1978. Finally, he was exiled by the pressure of Mohammad Reza Pahlavi to Neauphle-le-Château, Paris on 6 October 1978.