DUBAI, United Arab Emirates — Israel’s killing of Ali Larijani, Iran’s security chief and one of the Islamic Republic’s most seasoned power brokers, has carved another gap into Tehran’s leadership structure as the country fights a widening war and absorbs the loss of senior officials, March 18. The damage goes beyond one assassination because Larijani was among the few remaining figures with the standing to bridge Iran’s clerical establishment, elected institutions and security apparatus.
According to a Reuters profile of the strike, Larijani was killed March 17 near Tehran. AP reported that he was widely believed to have been running the country since the war began after the killing of Supreme Leader Ayatollah Ali Khamenei and other senior officials. His death also lands in the middle of a broader decapitation campaign that has already removed several senior political and military leaders, according to a Reuters tally of Iranian officials killed in the war.
Why Ali Larijani mattered inside Tehran
Larijani was not simply another hard-liner in a system full of them. A former Revolutionary Guards commander, former parliament speaker and former chief nuclear negotiator, he spent decades moving between Iran’s security, legislative and diplomatic centers. Before he was killed, Reuters described him as a reemerged power broker handling a broad portfolio that stretched from nuclear talks to regional diplomacy and the suppression of internal unrest.
That made him unusually hard to replace. Larijani mattered not because he softened the Islamic Republic’s core worldview, but because he could translate among rival power centers and turn battlefield shocks into political decisions. He combined clerical-family standing, institutional experience and ties to the security establishment at a moment when Tehran had already lost much of its upper tier.
Ali Larijani and the IRGC tilt
That intermediary role is precisely what disappears now. In a Reuters analysis of the aftermath, senior Iranian officials and outside analysts said Larijani’s killing would complicate decision-making and push Tehran deeper into a security-driven mode. The Islamic Revolutionary Guard Corps already held enormous influence, but Reuters reported that the Guards have tightened their grip on wartime decisions, while parliament speaker Mohammad Baqer Qalibaf stands out as one of the few remaining figures with both military credentials and political clout.
Even so, Qalibaf lacks Larijani’s clerical standing and the same depth of ties inside Iran’s religious hierarchy. That could make consensus harder at the top, even if it strengthens short-term alignment with the security services. The more immediate risk is a smaller leadership circle, less policy flexibility and fewer channels for any diplomatic off-ramp.
A longer arc behind the Ali Larijani story
The strike also resonates because Larijani’s career traced the Islamic Republic’s evolution. Reuters reported in 2007 when he resigned as Iran’s chief nuclear negotiator after internal tensions over Iran’s nuclear strategy. In 2015, Reuters reported that as parliament speaker he said he personally considered the nuclear accord good, even as hard-line opposition gathered around it. Then Reuters reported in 2021 that the Guardian Council barred him from the presidential race, a reminder that even an insider of his stature could be squeezed by the system’s narrowing politics.
That trajectory helps explain why his killing feels like more than a battlefield assassination. Larijani had already lived several political lives inside the Islamic Republic: security man, negotiator, institutional insider, sidelined veteran and then wartime broker. By the time he returned to the center, Iran had fewer civilian-style managers and more commanders. His death accelerates that shift.
That is why the killing of Ali Larijani amounts to a major blow to Iran’s leadership. It removes one of the last officials who could speak fluently to clerics, bureaucrats and the IRGC at the same time, and it leaves a system under fire leaning even more heavily on security commanders.
