Iranian authorities confirmed the death of Ali Larijani, secretary of the country’s Supreme National Security Council, after an overnight strike on Tehran that the Israeli military has said targeted and killed him. Tehran’s presidency issued a formal mourning statement, while Israel’s defence forces released a terse claim that it had “killed” Larijani during the operation. Chinese analysts quoted in state-affiliated outlets warned the killing will produce a sharp negative shock to Tehran’s wartime command structure.
Larijani was a veteran operator in Iran’s power architecture: a former parliament speaker and, crucially, a one-time lead negotiator on Tehran’s nuclear file. He was reappointed to the national security council in August 2025 and, according to domestic commentary, had played a central role coordinating military strategy, managing relations with neighbouring states and maintaining lines of communication with foreign interlocutors during the period of acute crisis that followed attacks on Iran’s senior leadership.
Analysts say the immediate military consequence will be dislocation in Tehran’s command-and-control. The loss of a figure who both coordinated Revolutionary Guard operations and served as a bridge between hardliners and pragmatic elements risks slowing decision-making, degrading inter-service coordination and creating temporary “windows” in which adversaries could exploit Iranian disarray. At the same time, Iranian officials and commentators predict—correctly in military terms—that Tehran is likely to respond with heavier and more frequent strikes using ballistic missiles and drones against Israeli territory and U.S. bases in the region.
Domestically, Larijani’s death is likely to reconfigure power balances inside Iran. Observers in Beijing and Tehran argue he functioned as a buffer between conservative hardliners and the pragmatists who could be tasked with diplomacy; his removal strengthens the hand of intransigent elements. That shift will complicate any attempt to revive or negotiate constraints on Iran’s nuclear activities, because a credible, trusted interlocutor with Larijani’s combination of negotiating experience and regime credibility will be hard to replace.
Regionally, the incident raises the stakes for Gulf security and global energy markets. A predictable chain of retaliation—more missile and drone attacks, expanded support for proxies, intensified naval posturing in the Strait of Hormuz—would disrupt shipping, raise insurance and shipping costs, and further alarm markets already sensitive to Middle East tensions. For the United States and its partners, the strike also poses thorny legal and strategic questions about operations carried out in the heart of Tehran and the risks of escalation from targeted killings to broader war.
Important caveats remain. The narrative appearing in Chinese outlets frames the assassination as occurring after an earlier attack on Iran’s former supreme leader; that sequence and some details in domestic reports have not been independently corroborated by multiple international news agencies at the time of writing. If Israel’s claim is verified, the operation marks a significant escalation in the methods used against high-level Iranian officials and will test how far Tehran is prepared to push in retaliation without precipitating uncontrollable escalation.
What to watch next is clear: the tempo and targets of Iranian counterstrikes, announcements of replacements or reorganisations at the national security council, the degree of coordination among Iran’s armed factions, and reactions from regional capitals and global powers. Each will determine whether Larijani’s killing is a tactical blow with short-term effects or the opening move in a sustained cycle of tit-for-tat escalation with global repercussions.