Just before dawn on Saturday, 5 September, Iran’s Revolutionary Guard Corps fired ballistic missiles at two United States Navy warships patrolling the approaches to the Strait of Hormuz. Every round missed. Nobody aboard was hurt.
Within hours CENTCOM answered with three tankers instead of two ships. It hit the M/T Downy off Kharg Island, disabled the M/T Stark 1 near Jask, and destroyed an unladen carrier called the M/T Kylo. Admiral Brad Cooper, the command’s chief, put the exchange rate in writing: “If you shoot at two of our ships, we will impose an even higher economic cost, taking out three of yours.”1
CENTCOM called the three ships part of a multibillion-dollar shadow network funding the IRGC and its regional proxies, the same language Washington now applies to any tanker moving Iranian crude without a clean paper trail.
That is the arithmetic of a war that has run for months now on oil instead of territory. A senior Iranian source told Reuters this week that the country, despite sitting on some of the largest crude reserves on earth, has about two months of gasoline left. Treasury Secretary Scott Bessent has a name for it: the “Jaws of Death.”
Rationing at the pump is not yet declared policy in Tehran, but the fuel that keeps missile crews, checkpoints and generators running comes from the same shrinking tank as the petrol that keeps ordinary Iranians moving.
Most people reading Saturday’s strikes will take them as the sequel to the blockade, a harder turn of the same screw. That misreads the mechanics.
Blowing up a smuggler’s hull is the softer move available to Washington, not the harder one.
To put it bluntly, blowing up a smuggler’s hull is the softer move available to Washington, not the harder one.
A hull is one ship, replaceable on a shipyard’s clock. The trade is the transfer point, not the hull, and a transfer point relocates to wherever a warship is not allowed to go.
A closing hand it never named is grading that call now.
This column bet in June that the Strait of Hormuz would not see a multi-week, near-total closure before mid-2027, reading Hormuz through Tehran’s own incentives: a state that lives off the strait’s revenue does not shut its own tap. A closing hand it never named is grading that call now. The near-shutdown since July has been American, a blockade, not an Iranian one, and Saturday’s tanker strikes push the same wrong-hand problem further into the ledger.
The gap between the two hands shows up first at the relay, not in the Gulf.
Seventy kilometres off Johor, in a stretch of water called the Eastern Outer Port Limits, the relay already runs. Malaysia’s maritime agency has logged more than 500 ship-to-ship transfers of sanctioned Iranian crude there since the start of 2025, tankers meeting at anchor to swap cargo before it sails on, mostly to China, under a cleaner name.2 Malaysian officials have called this a “jurisdictional gap,” which is the polite term for a fact CENTCOM cannot fix with an aircraft carrier.
Line up who cannot afford to move.
Washington can strike an IRGC-linked hull anywhere near Iran’s own coast and call it self-defence. It cannot put a missile into a tanker anchored inside Malaysian waters without converting an economic campaign into an act of war against a state that has done nothing but fail to police 500 transfers.
Tehran cannot afford to lose the relay itself. Two months of gasoline is not a number a government negotiates around twice.
Malaysia cannot afford to build the navy that would close a strait it does not consider its problem, and has even less appetite for hosting the first shot fired in someone else’s war.
China, the buyer at the end of every one of those transfers, has no reason to ask Malaysia to try.
None of the four has an incentive to change what it is already doing, which is the surest sign of what happens next.
Every prior chokepoint this column has weighed sat inside a strait, a fab, a clearing rail, something a state built and can be seen to hold. This one sits inside a hull’s paperwork: a name painted over, a transponder switched off, an anchorage picked precisely because no single navy owns it.
Expect Iran’s remaining shadow-fleet hulls to route harder toward the Malaysian relay, not away from it, precisely because losing a tanker off Kharg now costs more than it ever has. By 7 January 2027, ship-to-ship transfers logged in the Eastern Outer Port Limits will be running at or above the roughly 500-transfer pace set since early 2025, even as CENTCOM continues to strike and disable Iranian-flagged or IRGC-linked tankers closer to home. This bet rests on one thing: that Washington keeps treating a strike inside Malaysia’s claimed waters as a line it will not cross, even against a hull it has already named a legitimate target everywhere else.
Watch for a cheaper tell than another tanker sunk near Kharg: whether a Malaysian patrol boat ever gets new orders for the water off Johor, where the relay has run uninterrupted since before this war’s first missile flew.