The Strait Has Become a Pressure Cooker

Seven months after U.S. and Israeli attacks on Iran began the war on February 28, the administration’s theory of victory is acquiring the familiar contours of a contradiction: diplomacy remains rhetorically available, while the machinery designed to make diplomacy unnecessary keeps getting larger. The June memorandum of understanding reportedly began to unravel within days; after a month of relative calm, attacks resumed last week. The Associated Press account is a useful corrective to the tidy vocabulary of “pressure”: this is an active war around an artery of global commerce.

Energy Secretary Chris Wright has now said, “There may not be a nuclear agreement.” That is less a negotiating position than an admission that Washington may be settling into a campaign to degrade Iran’s nuclear and delivery capacities, alongside military action and a blockade of Iranian ports. Treasury Secretary Scott Bessent’s stated ambition to “economically asphyxiate” Iran supplies the policy’s unusually candid subtext. ABC News reports that U.S. strikes on three Iranian tankers followed Iranian targeting of two U.S. Navy warships; whatever the eventual diplomacy looks like, the escalatory ladder is currently being used as a stairwell.

The strategic question is not whether coercion imposes costs. It plainly does. It is whether costs can produce an acceptable political settlement before they produce a wider, less governable conflict. Regime change and regime-policy change are often treated in Washington as adjacent items on a menu. History suggests they are different meals, served at radically different prices, with the bill usually arriving after the speechwriters have gone home.

The Strait of Hormuz carries roughly one-fifth of global oil and LNG supplies, which is why every claim of control over it deserves both attention and a raised eyebrow. Iran has not fully closed it, and Reuters reports that alternative supplies have helped prevent the world-scale energy shock Tehran appears to have wanted. As Iranian analyst Arash Azizi put it, “The balance of power has tilted against Iran a bit.” Reuters’ analysis says the U.S. blockade and tougher sanctions are constraining Iranian oil revenue and foreign-currency access while leaving Tehran short of the leverage it expected.

But a waterway need not be closed to become politically and economically hazardous. Wright said the seven-day average flow through Hormuz was a little above 9 million barrels a day, compared with a prewar average of 20 million, while regional bypass pipelines brought total outflow to roughly 13 million to 14 million barrels. Those are his figures, not an independently supplied market dataset; the AP noted that his Hormuz estimate appeared higher than recent averages tracked by TankerTrackers.com and others. The AP report nonetheless captures the broad reality: transit is diminished, escorted, contested and one miscalculation away from becoming everyone’s inflation problem.

This is the blockade paradox. Washington can point to continued flows as evidence that Iran has failed to weaponise the strait. Tehran can point to disrupted flows as evidence that it retains a veto-like capacity over risk. Both propositions can be true, which is precisely why this is not a stable equilibrium. Hormuz has become a market in insecurity: the cargo may move, but every insurer, captain and finance minister is now pricing the possibility that it will not.

Iran’s new Supreme National Security Council head, Mohsen Rezaei, says Tehran plans to announce an exclusion zone stretching from the line of the U.S. blockade toward Hormuz and into the Persian Gulf. Its precise location is unclear because, in the small irony that defines the whole episode, Iran has not specified where it believes the U.S. blockade line lies. The AP’s developing report says the proposal lacks clear boundaries, legal basis and enforcement details.

Rezaei said, “Any ship that enters this area with the intention of passing through the Strait of Hormuz and is identified will be placed on our sanctions list.” The formulation is revealing. Iran is answering a naval blockade with an administrative category, as if a sanctions spreadsheet could substitute for command of the sea. Yet the threat matters because commercial shipping does not require a perfect legal theory to change course; ambiguity, missiles and the possibility of misidentification can do considerable work on their own.

The information war is equally treacherous. Iranian state media claimed an uncrewed U.S. military vessel entering a restricted area had been struck; U.S. Central Command’s Capt. Tim Hawkins called that “a total lie.” There is no independently verified evidence in the supplied reporting establishing what happened. The point is not to referee a claim from the safety of a newsletter. It is to notice the operating environment: opposing militaries are exchanging attacks, competing accounts and ever-broader concepts of exclusion in the same narrow maritime space. That is how an incident becomes a precedent before anyone has established the facts.

The USS Abraham Lincoln left Thailand after a five-day visit to Laem Chabang, following an extended deployment that Reuters says included the blockade and combat operations in the Iran war. The nuclear-powered carrier has roughly 5,000 personnel; Democratic lawmakers say it set a modern-day record for consecutive days at sea, though the report does not provide the number or an independent comparison. Reuters’ dispatch notes that ordinary naval deployments run six to nine months and can extend during conflict.

A port call can look like geopolitical scenery—sailors in civilian clothes, hotel buses in Pattaya, a polite statement from the commanding officer—but it is also a logistics fact. Wars are not sustained by maps alone. They require crews who sleep, ships that receive maintenance, supplies that arrive, and allies prepared to host the apparatus. Thailand, the United States’ only treaty partner in mainland Southeast Asia, provided five days of respite for a force whose mission is being measured in patrols, tanker diversions and retaliatory strikes.

That mundane interval is the real antidote to cable-news abstraction. A blockade is not a switch Washington flips; it is a continuing demand placed on people, vessels, alliances and political attention. Iran may be economically weaker and still capable of enduring, as former U.S. negotiator Dennis Ross cautioned: “The Iranians have consistently surprised us in terms of their resiliency.” The strait, meanwhile, remains open enough to keep the war going and constrained enough to keep charging the world for it. That is not resolution. It is merely a very expensive form of waiting.