In late February 2026, Iranian state media reported that Ayatollah Ali Khamenei was killed following large-scale United States and Israeli strikes targeting senior Iranian leadership and security infrastructure in Tehran. International reactions focused on succession and the risk of further escalation between Iran and Israel.
Under Iran’s constitution, the Assembly of Experts is responsible for appointing a new Supreme Leader if the position becomes vacant. Until a successor is chosen, a temporary leadership council consisting of the president, the head of the judiciary and a cleric from the Guardian Council assumes the Supreme Leader’s duties.
Governments and the United Nations called for restraint, citing the risk of wider regional conflict, possible disruption to oil markets and uncertainty around future nuclear negotiations. The transition at the top of Iran’s political system has placed attention on how power is distributed between clerical authorities, elected institutions and the Islamic Revolutionary Guard Corps.
Who Was He And Timeline Of His Rule
Khamenei was born in 1939 in Mashhad. He studied in religious institutions in Iran and Iraq before becoming involved in political opposition to Shah Mohammad Reza Pahlavi.
1960s–1970s:
He joined clerics opposing the Shah’s rule. The opposition movement expanded into nationwide protests.
1979:
The Shah left Iran and the Islamic Revolution followed under the leadership of Ruhollah Khomeini. Iran became an Islamic Republic.
1981–1989:
Khamenei served as President of Iran.
1989:
After Khomeini’s death, the Assembly of Experts selected Khamenei as Supreme Leader at the age of 49.
As Supreme Leader, he held authority over the armed forces, state media, judiciary and key oversight bodies. The position placed him above the president and parliament in Iran’s political structure.
2009:
Disputed presidential election results led to mass protests known as the Green Movement. Security forces suppressed demonstrations.
2015:
Iran signed the Joint Comprehensive Plan of Action with the United States, United Kingdom, France, China, Russia and Germany. Iran agreed to limit uranium enrichment in exchange for sanctions relief.
2018:
The United States withdrew from the nuclear agreement and reimposed sanctions.
2017–2019:
Economic protests took place across several cities, including demonstrations triggered by fuel price increases in 2019.
2022:
The death of Mahsa Amini in police custody led to nationwide protests. Authorities carried out arrests and imposed restrictions.
2024–2025:
Tensions with Israel escalated into direct exchanges of strikes following an Israeli airstrike on an Iranian diplomatic site in Syria in April 2024. In April 2025, Iran launched missiles and drones towards Israel. Israel conducted further air operations targeting Iranian sites. Israeli Prime Minister Benjamin Netanyahu stated that operations were aimed at preventing Iran from obtaining nuclear weapons. Iranian officials denied seeking nuclear arms.
From 1989 to 2026, Khamenei served for more than three decades, making him one of the longest-serving political leaders globally.
Also Read: How World Leaders Reacted to the US-Israel Strikes and Iran’s Escalation
What’s Next
The Assembly of Experts must now appoint a new Supreme Leader. There is no automatic successor under Iran’s constitutional framework. The process may involve consultation among senior clerics and political authorities.
The transition will determine how power is balanced between religious institutions, elected officials and the Revolutionary Guard. It may also influence Iran’s nuclear policy, regional strategy and engagement with global powers.
Diplomatically, governments have emphasised the need to prevent further military escalation between Iran and Israel. Any change in leadership could affect negotiations related to sanctions, nuclear oversight and regional security arrangements.
For countries including India, developments in Iran may affect oil supply stability, trade routes and broader geopolitical alignments in West Asia.
Also Watch
US-Iran Ties Explained in 7 Chapters
The United States and Israel launched coordinated strikes on Iran
