On Sunday the president posted an AI-generated image depicting Kharg Island being destroyed. Kharg is the terminal through which the large majority of Iran’s crude oil exports pass.

Vice President JD Vance said on Monday that the post was a message to Iran. The following day the president said the United States would hit Iran hard in response to the attacks on bases in Jordan, while downplaying the threat Iran poses.

A category with no established rules

Set aside for a moment whether the threat is wise. The thing that has no precedent is the instrument.

States have always signalled intent — through troop movements, exercises, leaked planning, or a minister’s carefully chosen sentence. Each of those carries a cost that makes it credible. Moving a carrier group is expensive. A formal statement can be quoted back at you. The signal is legible partly because producing it required something.

A generated image of a specific facility being destroyed costs nothing to make and commits nobody to anything. It is not a plan, not an order, and not a statement of policy — but it names a target with a precision that a spoken threat usually avoids.

The interpretation problem

Deterrence theory holds that signals work when the receiving state can judge both capability and intent. The difficulty here is that an adversary must decide what an image means with no established convention for reading one.

Tehran has three plausible readings and no way to choose between them. It may be a public negotiating posture with no operational meaning. It may be a genuine warning delivered cheaply and deniably. Or it may be domestic political communication that was never primarily about Iran at all.

Analysts of crisis signalling generally argue that ambiguity of this kind is where escalation happens — not because either side wants war, but because a state that cannot classify a signal tends to prepare for the worst version of it. The counter-argument, made by defenders of this style of communication, is that deliberate unpredictability is itself a source of leverage, and that an adversary uncertain of your intentions is more cautious, not less.

Both arguments have been made about this administration for a decade. Neither has been settled, and an AI-generated image does not settle it — it just lowers the price of the tactic to zero.

What the new labelling rules do and do not cover

This is worth spelling out, because two of the world’s largest regulatory blocs began enforcing AI content rules on 2 August and neither of them addresses this situation.

California’s AI Transparency Act and the EU AI Act’s transparency provisions require providers of generative systems to mark synthetic content so it can be detected. Their purpose is to stop people being deceived about whether something is real.

That purpose does not apply here. Nobody was deceived. The post was understood as generated, and its meaning depended on being understood that way — a real photograph of Kharg Island in ruins would have been a report, not a threat. Provenance marking answers “is this authentic?” It has nothing to say about a head of state using an authenticated fabrication as a diplomatic instrument.

Which is a reminder that the labelling regimes were designed against one specific harm — synthetic media passed off as real — and that the technology is generating uses those rules were never aimed at.

The context it landed in

The post came days after American forces struck rocket launchers on Larak Island and Iran fired ballistic missiles at American bases in Jordan. The United Arab Emirates said it intercepted an Iranian drone over its waters on Monday. Reports suggest the president is weighing further strikes in the Strait of Hormuz to prevent Iran rebuilding its capacity to attack shipping.

Kharg Island would be a substantial escalation beyond any of that. It is not a launcher or a naval asset; it is the infrastructure Iran’s export economy runs on, at a moment when Iranians are facing runaway food inflation and a collapsing currency.

Which is why the ambiguity matters. If the image was a bluff, it named a target that a bluff should probably not name. If it was not, it was the announcement of a major escalation, made in a format that carries no formal weight at all.

Related: Two Continents Decided the Same Thing: Machines Should Say So and The Target Was Not a Ship. It Was the Lane Itself.

Sources

The post, Vance’s comments and the president’s remarks reported by POLITICO and the Washington Post, summarised in Just Security’s Early Edition; UAE drone interception and Hormuz reporting via Havana Times.