Three weeks ago, this region operated under a set of assumptions that had held, more or less, for forty years. Iran would threaten. Proxies would fight. Oil would flow. And everyone would continue doing what they do best. For 30 years, the Middle East operated in what strategists called the Gray Zone.

Iran funded Hezbollah but denied it. The US pressed sanctions but avoided confrontation. The GCC hosted American bases but maintained economic ties with Tehran. Israel struck Iranian assets in Syria but kept the conflict deniable. Everyone had leverage. No one had to commit fully. A shroud of ambiguity engulfed the region. February 28 put an end to that ambiguity. Those assumptions are gone.

The Gray Zone required ambiguity to function. Ambiguity requires all parties to prefer it. The moment one actor decides the cost of restraint exceeds the cost of action, the entire architecture collapses. That is precisely what happened. And once it collapses, it does not reassemble itself. What we are experiencing now is not a crisis within the old order. It is the construction of a new one.

We do not yet know what it will look like, who will shape it, or what the entry price will be. What we do know is this:

The GCC’s assumption that geographic distance and American security guarantees provided a buffer has been permanently challenged. The assumption that Iran would always stop short of striking Gulf capitals is gone. The assumption that energy infrastructure was effectively off-limits in any conflict involving the world’s major powers is gone.

The GCC’s assumption that geographic distance and American security guarantees provided a buffer has been permanently challenged. The assumption that Iran would always stop short of striking Gulf capitals is gone. The assumption that energy infrastructure was effectively off-limits in any conflict involving the world’s major powers is gone.

The question is no longer whether the Middle East has changed but whether the people in this region are thinking fast enough to navigate what it has become.

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The anatomy of 28th February

For years, Western and Israeli intelligence had been war-gaming a decapitation strike against Iranian leadership. The question was never really whether it was technically feasible. The question was whether any government had the political will to cross that line. On February 28, that question was answered. Israel’s Defence Minister Israel Katz revealed that the decision to kill the Supreme Leader Ali Khamenei was taken as far back as November 2025, in a tight forum convened by Prime Minister Netanyahu. The timing had originally been set for mid-2026. Events accelerated that timeline.

What the US and Israel executed was not an impulsive strike. It was a sequenced, layered operation. Operations Roaring Lion and Epic Fury were carried out simultaneously, targeting Iranian nuclear facilities, IRGC command nodes, air defense systems, and leadership in Tehran, Isfahan, Qom, Karaj, and Kermanshah.

The objective was not just to destroy infrastructure. It was to create a leadership vacuum before Iran could organise a coherent response. In that narrow sense, it worked. Khamenei was killed in the opening hours. The IRGC command structure was fractured. And Iran’s ability to coordinate a centralised military response was severely degraded.

But here is the intelligence paradox: The very success of the decapitation strike may have made the retaliation more dangerous, not less. In a centralized Iran: an Iran with Ali Khamenei issuing orders, with the IRGC taking direction from a unified command, is an Iran that can also be deterred, negotiated with, and signalled.

A decapitated Iran, operating through fragmented IRGC units, regional proxies, and an Interim Council with no established legitimacy, is an Iran that may not be controllable even by its own commanders.

A decapitated Iran, operating through fragmented IRGC units, regional proxies, and an Interim Council with no established legitimacy, is an Iran that may not be controllable even by its own commanders.

The Saturation Doctrine Iran deployed:  over thousands of missiles and drones across nine countries simultaneously looks less like a coordinated strategic response and more like a pre-programmed retaliation protocol triggered automatically when leadership went dark. And on the GCC side, missile defense performance was mixed.

The 50th Extraordinary GCC Meeting praised the efficiency of the armed forces and air defense systems, which countered the attacks with high professionalism. That is the diplomatic language. The shield held. But it was not impenetrable. That distinction matters enormously for what comes next.

Because the GCC’s entire deterrence posture rested on the assumption that hosting American forces and deploying Patriot batteries made their capitals effectively invulnerable. February 28 proved that the assumption was aspirational rather than operational.

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The GCC’s strategic pivot

For forty years, the Gulf Cooperation Council operated on a principle that we might call “studied ambiguity.” The GCC states maintained economic ties with Iran, hosted American military bases, cultivated relationships with both Washington and Beijing, and quietly positioned themselves as indispensable neutral ground in any regional dispute. That posture is over. On March 1, 2026, less than 24 hours after the strikes, the GCC convened its 50th Extraordinary Meeting. The date on the official communiqué reads “12 Ramadan 1447H.”

They were meeting in the holy month of Ramadan to discuss war. The statement that emerged was unambiguous: The security of GCC member states is indivisible. An attack on anyone is an attack on all. The Council affirmed its legal right to respond under Article 51 of the UN Charter: the right of self-defence. You might hear that language and think, “Of course, that is standard diplomatic boilerplate.” Except it is not. Not for the GCC. The Joint Defence Agreement of 2000 had always been, as analysts called it, “an exercise in ambiguity”. A pact that existed on paper but whose activation was deliberately left undefined. The GCC’s historical preference was procrastination. Consensus. Quiet diplomacy. The notion that an attack on Bahrain obligated a Saudi military response was always theoretically true and practically untested. February 28 ended that ambiguity.

The GCC Secretary-General stated last week that the GCC states “will not accept being a target for aggression, an arena for proxy conflicts, or a victim of deception and bad faith.” That sentence, spoken by the secretary-general of an organization that spent four decades avoiding exactly this kind of declarative posture, is the clearest signal yet that the old GCC is gone.

On 5th March, the EU joined the GCC in a joint statement condemning the attacks as “unjustifiable” and affirming the GCC’s right to defend itself. Both sides agreed to pursue joint diplomatic efforts aimed at preventing Iran from acquiring nuclear weapons. That last phrase is significant. It is not a ceasefire call. It is a statement of long-term strategic alignment between European and Gulf institutions,  precisely the kind of coalition they are now part of, whether they intended to be or not.

The question now is not whether the GCC will align more closely with the US-led security architecture. It already has. The question is what they will ask for in return and whether Washington has the capacity to deliver.

The views expressed in this article belong to the author and do not necessarily reflect the editorial policy of Middle East Monitor.

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