Chatham House: Iran Strikes Raise Regime Survival Stakes and Spillover Risk
By Bosphorus News Staff
Chatham House’s early expert assessment of the 28 February 2026 United States and Israeli strikes on Iran, and Tehran’s counterstrikes, treats the episode as a structural break rather than a manageable spike. The common thread across the contributions is that the killing of Supreme Leader Ayatollah Ali Khamenei shifts incentives on all sides, raises the probability of miscalculation, and increases the chance that escalation widens geographically even if none of the main actors set out to fight a regional war.
What Chatham House experts say, in their own words
Sanam Vakil: This is about regime survival, not a pauseable “round”
Vakil frames the moment as existential for Tehran and warns that the human cost will fall heaviest on ordinary Iranians. Her core point is that this is not a discrete cycle that can be paused and reset. She writes: “This new stage of conflict is existential and clearly about regime survival.”
She also flags how quickly the conflict’s political logic starts resembling earlier regime change era interventions, explicitly noting: “The parallel with the 2003 Iraq war is difficult to ignore.”
Bronwen Maddox: Air power does not produce a clean political end state
Maddox strips the question down to the endgame problem. Her blunt caution is: “You don’t do regime change from the air.”
She argues that even with the supreme leader killed, the system has depth, and the Islamic Revolutionary Guard Corps (IRGC) can become a harder center of gravity rather than a collapsing pillar. Maddox also warns the operation may land the US in the kind of conflict Trump claimed he wanted to avoid, writing: “This has the makings of the kind of enduring conflict that Trump said he didn’t want.”
Marion Messmer: The precedent problem and the “draw others in” risk
Messmer focuses on the strategic signal the strike sends beyond Iran. She warns that the operation reinforces a pattern that erodes diplomacy, arguing: “The attack set a worrying precedent by continuing a pattern: striking when negotiations are not going as Washington would like them to.”
Even if Iran’s state capacity is weakened, she notes that counterstrikes and interception reports already point to a wider danger: escalation can “draw other states in.”
Laurel Rapp: Washington is making a high risk domestic bet
Rapp frames the US move as a break with established policy logic and calls out the reliance on an internal Iranian political cascade that may not materialize. She writes: “The American strategy appears wholly predicated on the untested proposition that the Iranian people will quickly rise up.”
Her warning is essentially about the forced choice that follows if that premise fails: fold or double down. She also highlights the political contradiction with Trump’s own positioning, noting: “President Trump ran on a platform of ending forever wars and bringing US troops home.”
Farea Al-Muslimi: The Houthis are not an automatic switch
Al-Muslimi narrows in on Yemen and cautions against assuming that one of Iran’s key regional relationships translates into automatic battlefield decisions. His headline judgement is: “It is far from certain that they will intervene militarily.”
He explains that the Houthis have historically been sensitive to accusations of being an Iranian proxy, and that overt identification with Iran can be domestically unpopular in Yemen.
The most vital quote
If you need one line that captures the Chatham House thrust, it is Vakil’s: “This new stage of conflict is existential and clearly about regime survival.”
It is the clearest statement of why containment is uncertain, timelines are hard to predict, and spillover risk rises even without deliberate expansion.
Spillover risk, plus our Ankara lens
Chatham House repeatedly returns to the spillover theme: retaliation options persist, partners are exposed, and escalation can widen through networks and precedents. Our own Bosphorus News assessment approaches the same risk through Türkiye’s neighbor calculus: when state capacity next door cracks, costs arrive first via migration pressure, domestic security strain, and attribution risks around NATO-linked infrastructure and activity.