Iran confirmed on March 18 that Ali Larijani, secretary of the Supreme National Security Council and a veteran of the Islamic Republic’s political and negotiating elite, was killed in an airstrike. Israel had announced the strike a day earlier; Tehran’s confirmation closes a chapter of public ambiguity and opens one of acute strategic uncertainty across the Middle East.
Larijani was a familiar figure in Tehran’s corridors of power. Born in Najaf in 1957 to Iranian parents, he rose through the Revolutionary Guard into senior state roles: head of the national broadcaster in the 1990s, speaker of parliament from 2008 to 2020, and Iran’s chief negotiator in early nuclear discussions that laid groundwork for the 2015 JCPOA. In 2025 President Pezeshkian named him secretary of the SNSC, tasking him with coordinating military planning, IRGC operations and crisis diplomacy.
His public stance shifted markedly after the strikes that killed Iran’s former supreme leader and other senior officials on February 28. Once a cautious advocate of negotiation, Larijani moved onto a markedly hawkish footing, using social media and public rallies to call for robust responses to American and Israeli pressure. Israeli statements after the strike framed him as a central operational leader—indeed “the de facto leader” in Tehran’s wartime command—amplifying the symbolic and practical blow of his death.
Analysts in Beijing and elsewhere see Larijani’s killing as more than the removal of a single individual. He functioned as a rare bridge between Iran’s pragmatic negotiating faction and its hardline security apparatus. His absence is likely to dislocate decision-making at the top, degrade the coherence of strategic planning and complicate the already fraught prospects for reviving or negotiating limits on Iran’s nuclear programme.
In the near term Tehran faces a painful trade-off. The SNSC secretary’s death creates both incentives for immediate, dramatic retaliation—to deter further decapitation strikes—and operational frictions that could delay or degrade Iran’s responses. Chinese analysts quoted in Tehran warn that Iran may nevertheless pursue a broad and intensified campaign of retribution: more ballistic missile and drone strikes against Israeli territory and US bases in the region, tightened control over the Strait of Hormuz, and increased activation of proxy networks across the Levant and Gulf.
For external actors the implications are stark. Washington and Jerusalem gain a short-lived tactical advantage if Tehran’s command and control stumbles; they also shoulder the strategic risk that a politically empowered hardline faction in Tehran will favour maximalist retaliation, closing off diplomatic avenues. Larijani’s credibility as a negotiator and his personal channels with international interlocutors made him an unusually useful, if imperfect, interlocutor—replacements with comparable legitimacy and access will be hard to find.
Tehran has anticipated sudden losses: informed sources say that the government maintains several pre-designated alternates for key positions to preserve continuity. Still, personnel redundancy cannot immediately substitute for the institutional trust and negotiating capital Larijani accumulated over decades. In the absence of a clear and accepted successor, Iran’s strategic calculus will be shaped as much by intra-elite jockeying as by external pressure.
The death sharpens the risk of a feedback loop of strikes and reprisals: decapitation attacks, stepped-up retaliatory strikes and proxy escalations could rapidly extend the conflict beyond the current theatres. For the international community the priority will be to limit spillover: safeguarding merchant shipping, protecting bases and allies, and urgently re-establishing backchannels to reduce miscalculation. Without such steps, Larijani’s killing may mark the start of a more violent and less negotiable phase in a confrontation that already threatens regional stability.