BLACK mobile logo

united states

Death of Ali Larijani deepens crisis at heart of Iran's leadership

March 18, 2026

Israel's assassination of Ali Larijani, Iran's security chief and head of the Supreme National Security Council, has eliminated a key strategic decision-maker during an extremely vulnerable period for the Islamic Republic. Larijani, considered a pragmatic hardliner, was simultaneously managing Iran's ongoing war, widespread domestic protests that have killed thousands, and stalled nuclear negotiations when he was killed as part of a broader Israeli campaign targeting senior Iranian leadership. His death, following the recent killing of Supreme Leader Ali Khamenei, leaves critical national security issues without experienced leadership and may shift more power to military forces who have been granted broader autonomous authority.

Who is affected

  • Ali Larijani (killed in Israeli air strike)
  • Supreme Leader Ali Khamenei (killed on February 28)
  • Iranian protesters (thousands killed in crackdowns)
  • President Masoud Pezeshkian
  • New supreme leader Mojtaba Khamenei
  • Iranian army chief Amir Hatami
  • Senior Iranian officials and military commanders (several killed in recent weeks)
  • Iran's Supreme National Security Council
  • Iranian military and armed forces units
  • Iran's population of over 90 million people

What action is being taken

  • Israel is conducting a sustained campaign of air strikes targeting senior Iranian officials and commanders
  • Iranian armed forces units have been given broad authority to act if senior leadership is incapacitated
  • Iran is imposing a harsh crackdown on domestic protesters
  • Iran is disrupting global energy markets
  • The Iranian government is delaying public announcements and keeping figures like Mojtaba Khamenei out of public sight

Why it matters

  • Larijani's assassination represents more than the loss of a single official—it significantly deepens Iran's leadership crisis at a moment when the country faces simultaneous military, domestic, and diplomatic crises. As secretary of the Supreme National Security Council, he was central to managing war strategy, widespread domestic unrest, and nuclear negotiations with the West. His death, combined with the killing of the Supreme Leader and other senior figures, threatens the functionality of Iran's government system and could lead to less coordinated, more volatile decision-making as power shifts toward military commanders. This leadership vacuum in a nation of over 90 million people could fundamentally affect both the trajectory of the regional conflict and the stability of the Iranian state itself.

What's next

  • Iranian army chief Amir Hatami has threatened to launch a "decisive" retaliation for Larijani's death
  • An as-yet-unknown successor will take over Larijani's responsibilities managing the war, domestic unrest, and nuclear negotiations
  • The likely short-term outcome includes a harder military posture in the war and harsher domestic repression
  • Any new senior appointee will face immediate risk of being targeted by continued Israeli strikes

Read full article from source: BBC