Clerics announced Mojtaba Khamenei as the successor on Sunday, placing him in charge of leading the Islamic Republic during one of the most severe crises in its 47-year history. Although he has never held elected office or faced a public vote, he has long been an influential figure within Iran’s political establishment and maintains strong ties with the powerful Islamic Revolutionary Guard Corps.

In recent years, Mojtaba Khamenei had increasingly been viewed as a leading candidate to succeed his father. Analysts say his appointment may signal that hardline factions within Iran’s leadership continue to hold significant influence and could reduce the likelihood of negotiations or a diplomatic settlement in the near term as the conflict enters its second week.

The decision was made by the Assembly of Experts, the 88-member clerical body responsible for selecting Iran’s supreme leader. Earlier, the assembly had indicated that it had reached a majority consensus without naming the successor publicly, with one member saying the path of Ruhollah Khomeini and Ali Khamenei would continue.

Ali Khamenei had ruled Iran for 37 years after succeeding Khomeini, the leader of the Iranian Revolution in 1979. He was killed in strikes on Tehran on February 28 at the start of the war that has since destabilised much of the Middle East.

The leadership transition comes amid escalating rhetoric from Israel and the United States. The Israel Defense Forces has reportedly warned that any successor to Khamenei could also be targeted, while Donald Trump said the conflict might only end once Iran’s military leadership and ruling establishment were removed.

Trump also suggested that Iran’s next leader would struggle to remain in power without US approval, saying the new leader would “not last long” if he did not receive such backing.

Iranian officials strongly rejected the idea that foreign governments could influence the leadership selection process. Mohammad Bagher Ghalibaf, speaker of Iran’s parliament, dismissed the suggestion and insisted that only the Iranian people would determine the country’s political future.