On Sunday morning, Iranian state television announced that the Islamic Revolutionary Guard Corps had struck a remotely operated US military vessel in the Strait of Hormuz, after it tried to enter what Iran calls a restricted area.

By Sunday afternoon, US Central Command had an answer of exactly three words.

“A total lie.”

What makes this worth writing about is not who is right. It is that after a week in which the United States struck three Iranian tankers, sank one of them, and had ballistic missiles fired at an aircraft carrier, this is now a war being fought partly in claims.

The Claim, and the Denial

Iran’s account is thin. The IRGC said the vessel was remotely operated and American, that it was trying to enter a protected area of the Strait, and that it was struck. It did not say what type of vessel it was, where exactly, at what time, or whether it was damaged or destroyed.

Nobody outside Iran has identified the craft. No type, no name, no class, no hull number has appeared anywhere. Anyone telling you it was a Saronic Corsair or a Global Autonomous Reconnaissance Craft is guessing.

In the first wire cycle on Sunday morning, CENTCOM declined to confirm or comment. By the afternoon its spokesman had a position.

Both things can be reported. Only one can be true. Readers deserve to be told which is which, and this is the honest state of it: an Iranian claim with no supporting detail, and a flat American denial with no supporting detail either.

What Definitely Did Happen

The day before, on 5 September, CENTCOM said the IRGC had launched ballistic missiles at two US Navy warships. Its statement was specific about the outcome and vague about the ships: an aircraft carrier and a guided-missile destroyer “successfully evaded multiple unprovoked Iranian attacks, and no American personnel were harmed.” Neither vessel has been named.

Then came the retaliation, and CENTCOM named everything. The M/T Downy was permanently disabled off Kharg Island, the hub through which the overwhelming majority of Iran’s pre-war crude exports moved. The M/T Stark 1 was hit near Jask. And the unladen M/T Kylo, also known as the Noxen and flagged in the Comoros, was struck in multiple critical locations in the Gulf of Oman after its crew was ordered to abandon ship.

All three were described by CENTCOM as part of a multibillion-dollar shadow network that funds the IRGC and its regional proxies.

The aviation detail is frustratingly thin. US officials told Air & Space Forces Magazine that a mix of Air Force and Navy aircraft carried out the attacks, including both fighters and drones. No types have been released. What is known is the aiming: the Downy and Stark 1 were hit by weapons fired at the stern — disabling the engineering spaces rather than the cargo — while the Kylo took a heavier bombardment.

Three Minutes to Get Off the Stern

The most striking single piece of evidence to emerge is not a photograph. It is audio.

Iran International obtained video of three VHF radio warnings issued to the Stark 1 by a US military aircraft before the strike. The first gives the crew three minutes to clear the stern of the ship. The second is a one-minute warning. The third tells them to get into the lifeboats and abandon the vessel immediately.

In the background, crew can be heard speaking Persian and Urdu. One asks whether the captain is at his post. He is told the captain is asleep.

CENTCOM announced the sinking on 6 September in language that tells you a good deal about how this campaign is being fought in public.

The Kylo was empty, and no oil slick has been reported from any of the three vessels.

Tanker for a Tanker

None of this is improvised. Axios reported on 2 September that President Trump had approved a policy shift, quickly nicknamed tanker-for-a-tanker: the United States would no longer strike Iranian vessels only for running the naval blockade, but as explicit economic retaliation for Iranian attacks.

The logic is visible in the arithmetic Admiral Cooper laid out. Two American ships shot at, three Iranian ships destroyed. One US official quoted by Axios described the aim as to “mow the lawn”; another said an earlier round had bought at least a month of lowered threat levels.

The economics behind it are brutal. Iranian crude loadings have collapsed from roughly two million barrels a day before the war to somewhere between 220,000 and 255,000 a day in August, according to shipping data. The US Treasury has sanctioned more than a hundred shadow-fleet vessels since the start of 2026. Brent closed on 4 September at $96.28, its highest since late July and up from around $70 before the war.

And in Vienna, a Different Kind of Escalation

Running underneath the shooting is a diplomatic track that may matter more in the long run.

The United States, United Kingdom, France and Germany have drafted a resolution for the IAEA Board of Governors that would refer Iran to the UN Security Council for failing to comply with its non-proliferation obligations. It was reported on 4 September. Diplomats stress it has been circulated but not formally submitted, and no vote has been scheduled; if tabled, it would go to the Board in Vienna the following week.

It would be the first such referral in roughly two decades. It follows the Board’s June 2025 finding that Iran had breached its safeguards obligations, and an IAEA quarterly report of 1 September 2026 stating that the agency cannot verify the location or status of well over 200 kilograms of uranium enriched to 60 per cent.

The draft text is careful. It asks the Director General to transmit the resolution to the Security Council and the General Assembly, and stresses support for a diplomatic solution.

Which leaves the strait itself. Kpler tracking data counted six vessels crossing on one day last week, eleven the day before, five the day before that — a ten-day average of thirteen a day through one of the world’s busiest waterways. Whatever did or did not happen to an unmanned boat on Sunday morning, that number is the war.

Sources: US Central Command, Associated Press, Al Jazeera, Air & Space Forces Magazine, Iran International, TWZ, Axios, Reuters, US Treasury (OFAC), IAEA, GlobalSecurity.org.