The Supreme Leader of Iran is the highest political and religious authority in the Islamic Republic, outranking the president, parliament, and all military commanders. The office was established by Ayatollah Ruhollah Khomeini following the 1979 Islamic Revolution and is enshrined in Iran's constitution under the doctrine of Velayat-e Faqih (Guardianship of the Islamic Jurist). Only two men have ever held the title: Khomeini (1979–1989) and Ali Khamenei (1989–present).
What Powers Does the Supreme Leader of Iran Actually Hold?
Iran's constitution grants the Supreme Leader sweeping authority across every branch of government. He serves as commander-in-chief of the armed forces, including the Islamic Revolutionary Guard Corps (IRGC), which controls an estimated $10–20 billion in economic assets. He appoints the heads of the judiciary, state television, and half of the 12-member Guardian Council — the body that vets all candidates for elected office, effectively controlling who may run for president or parliament. The Supreme Leader also sets Iran's overarching foreign policy, including its nuclear negotiating positions.
How Is the Supreme Leader Chosen — and Can He Be Removed?
The Supreme Leader is selected by the Assembly of Experts, an 88-member clerical body elected by Iranian voters every eight years. In theory, the Assembly can also dismiss the Supreme Leader if he is deemed incapable — a power it has never exercised. When Khomeini died in June 1989, the Assembly elevated Ali Khamenei, who held the relatively junior clerical rank of Hojatoleslam; his rank was retroactively elevated to Ayatollah to meet constitutional requirements. Khamenei has held the post ever since, making him one of the world's longest-serving heads of state.
Key Figures: Khomeini vs. Khamenei Compared
| Attribute | Ruhollah Khomeini | Ali Khamenei |
|---|---|---|
| Term | 1979–1989 | 1989–present |
| Clerical rank at appointment | Grand Ayatollah | Hojatoleslam (elevated to Ayatollah) |
| Role in 1979 Revolution | Founder and leader | Mid-ranking revolutionary cleric |
| Key foreign policy stance | Anti-US, Iran-Iraq War | Nuclear programme, regional proxy network |
| Response to dissent | Consolidated power against liberals | Suppressed Green Movement 2009, crackdown 2022 |
Why Does the Supreme Leader Matter for Global Politics Today?
Ali Khamenei, born in 1939, makes final decisions on Iran's uranium enrichment programme, its support for Hamas, Hezbollah, and Houthi forces, and its relationships with Russia and China. Western governments negotiating the 2015 Joint Comprehensive Plan of Action had to factor in his ultimate veto. After Iran's 2022 protests — sparked by the death of Mahsa Amini in morality police custody — Khamenei personally backed the crackdown that killed over 500 demonstrators according to human rights groups. The question of succession looms large: Khamenei is in his mid-80s and no clear successor has been publicly designated.
