How a mid-ranking cleric became the longest-serving supreme leader in modern Iranian history

Cultures · Published 29 September 2026 · Updated 25 October 2026 Swipe more like this →

In short: Ali Khamenei rose from a mid-ranking cleric to Iran's supreme leader, holding power for 36 years. Despite lacking the traditional religious qualifications required by the constitution, he centralized authority, militarized the state through the IRGC, and navigated decades of international isolation until his assassination in 2026.

Born in 1939 in Mashhad, Ali Khamenei was a central figure in the 1979 Islamic Revolution. His early political ascent was marked by his close relationship with Ruhollah Khomeini and his service as Iran's president from 1981 to 1989. During this period, he survived an assassination attempt in 1981 that left his right arm permanently paralyzed. Following Khomeini's death in 1989, the Assembly of Experts elected Khamenei as supreme leader, despite his lack of the constitutional requirement of marja'—a senior clerical authority. The constitution was subsequently amended to facilitate his leadership, cementing his role as the ultimate arbiter of Iranian state policy.

Khamenei’s tenure was defined by the systematic centralization of power. He built a robust personality cult and installed loyalists across key institutions, including the judiciary, parliament, and the Islamic Revolutionary Guard Corps (IRGC). By creating parallel structures within these organizations, he ensured that no single institution could challenge his authority. His foreign policy was characterized by a commitment to Shia Islamism, the export of the Islamic Revolution, and a staunch opposition to Western hegemony, particularly the United States and Israel. He transformed Iran into an energy superpower, yet his focus on nuclear development and regional proxy wars led to severe international sanctions and economic stagnation.

The final years of his rule were marked by escalating tensions. Following the 2022–2023 protests and subsequent unrest in 2025 and 2026, his regime faced mounting pressure. The Twelve-Day War in 2025 and the subsequent conflict in 2026 culminated in his death during a coordinated assault by the United States and Israel. Following his assassination on February 28, 2026, the Assembly of Experts appointed his son, Mojtaba Khamenei, as his successor. His legacy remains a subject of intense debate, characterized by his supporters as a defender of revolutionary ideals and by critics as an authoritarian leader responsible for widespread political repression and state-sanctioned violence.

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