For months before the February 28 strikes, the official framing was nuclear deterrence. The U.S. and Israel were attacking Iran to prevent it from building a bomb. That story held until Reuters reported that prior to the attacks, the CIA had assessed that killing Khamenei could produce a hardline IRGC replacement — and the administration struck anyway. That assessment, made two weeks before the attack and set aside, reveals the actual objective: the U.S. is not fighting a war of nuclear deterrence. It is fighting a war of succession.
The War Began While Iran Was Selecting a New Leader
The timing is not incidental. Ayatollah Ali Khamenei, 86 years old and in failing health, had been overseeing the beginning of Iran’s succession process for months. The Assembly of Experts — the 88-member clerical body that selects Iran’s Supreme Leader — had already begun informal vetting of candidates. The U.S. struck on February 28 and killed Khamenei in that first wave, along with his son Mojtaba and senior officials, during what Reuters described as a high-level meeting at his compound.
The American Enterprise Institute’s analysis put it plainly: the war struck at exactly the moment when Iran’s power was most uncertain, creating what it called a “giant power vacuum crisis.” RAND’s commentary noted that succession is now occurring under “acute domestic unrest, economic crisis and unprecedented external military pressure” — circumstances entirely unlike the managed transition after Khomeini’s death in 1989, when the regime had time to consolidate a successor in a stable environment.
By killing Khamenei at the onset of a succession process rather than after one completed, the U.S. has inserted itself into the mechanism of who governs Iran. That’s not deterrence. That’s targeted disruption of a political transition — a war of succession dressed in the language of nonproliferation.
The CIA’s Warning Was Ignored by Design
The Reuters exclusive is the key document in understanding what the administration was actually trying to achieve. Two weeks before the strikes, CIA analysis assessed that killing Khamenei could result in a hardline IRGC replacement. This is not a post-hoc warning — it was provided to decision-makers before Operation Epic Fury launched. The intelligence was not high-confidence, but it was explicit: removing Khamenei might produce someone worse from Washington’s perspective.
The administration struck anyway. Foreign Policy had reported in February that Trump’s war plans “dangerously misread Iran” — specifically, that the administration misread Khamenei’s position, misread whether a successor would be more moderate, and misread the IRGC’s likely response to decapitation. But misreading and ignoring intelligence are different things. Knowing the CIA’s assessment and proceeding suggests the administration calculated that the chaos of succession itself — regardless of who ultimately emerges — was preferable to a stable, hostile Iran with a functioning command structure.
That’s a bet on managed disorder. Trump made it explicit when he told ABC News that Iran’s next leader needs U.S. approval or “won’t last long.” The succession vacuum isn’t a side effect of the war — it’s the condition the war was designed to create.
What Controlling the Succession Actually Requires
Trump’s stated objective — being “personally involved” in selecting Iran’s next leader, as Axios reported — runs directly into the architecture of Iranian governance. The Assembly of Experts cannot safely convene during active warfare; its headquarters in Qom was destroyed in the strikes, and members are being targeted. The interim three-member leadership council — President Masoud Pezeshkian, Judiciary Chief Gholam-Hossein Mohseni-Ejei, and Ayatollah Alireza Arafi — operates under Article 111 of Iran’s constitution during a 50-day succession window.
The IRGC holds the actual balance of power. RAND’s analysis is unambiguous: whether the Guards remain unified or fragment will determine the regime’s stability. If they close ranks — the most likely response to external pressure — the system will harden into greater securitization, with security elites gaining de facto power over whatever cleric is eventually selected. The New Statesman noted that the 2026 succession is categorically different from 1989: it is happening inside a country under active military attack, with no safe institutional space for the normal clerical deliberation.
What the administration wants — a moderate, U.S.-approved successor who will negotiate away Iran’s nuclear program and regional influence — requires the IRGC to stand down, the Assembly to function under fire, and the selected candidate to survive both Iranian hardliners and Trump’s subsequent approval process. The New York Times’ analysis found Iran’s strategy is specifically designed to outlast Trump’s political will, calculating that midterm pressures and MAGA skepticism about endless wars make Washington more vulnerable to attrition than Tehran is.
What This Actually Means
The succession war thesis explains what pure deterrence logic cannot: why the U.S. struck now, why Khamenei was targeted in the opening salvo rather than preserved as a potential negotiating partner, and why Trump has made such extraordinary public statements about vetting Iran’s next leader. The war is intended to militarily shape the composition of post-Khamenei Iran — to ensure that whoever replaces a Supreme Leader who spent 35 years building a nuclear program and regional proxy network does so under conditions of maximum instability and U.S. leverage.
Whether that’s achievable is a separate question. The CIA’s pre-strike assessment suggests the intelligence community was skeptical. The AEI warned of a “power vacuum crisis.” RAND projected that IRGC consolidation is the most probable outcome, producing a more securitized, hardline successor state rather than a reformed one. The New York Times found Iran is betting it can outlast Trump. Every analyst examining this war finds the same gap: the objective of shaping Iranian succession is real and explicit, but the mechanism for achieving it — airpower without ground troops, succession vetting without boots in Tehran — is not.
Trump launched a war of deterrence that revealed itself as a war of succession. The 5-year frame he used to justify it — “I don’t want people to have to go back in five years” — is the tell. Nuclear deterrence doesn’t require approval of who governs a country. Succession engineering does.
Sources
- Reuters — CIA assessed Khamenei could be replaced by hardline IRGC elements if killed
- American Enterprise Institute — Khamenei Is Dead: The 2026 Iran War Could Become a Giant Power Vacuum Crisis
- RAND — Who or What Will Replace Iran’s Supreme Leader Ali Khamenei?
- The New York Times — Iran’s Strategy: Expand the War, Increase the Cost, Outlast Trump
- Foreign Policy — The Trump Administration’s War Plans Dangerously Misread Iran
- Axios — Trump says he must be involved in picking Iran’s next leader
- New Statesman — Iran after Khamenei