Trump Says He Will Declare the Strait of Hormuz US Territory. There Is No Mechanism to Do It
Speaking to a room of law enforcement officers in Garden City, New York on Friday, President Trump said that once the war with Iran is finished he will be “declaring the Hormuz Strait a territory of the United States.” Then he said the part that matters: “Essentially, that’s what it is. We have the blockade. No ships get through unless we want them to.”
That second sentence tells you what the first one is. This is not a legal claim being prepared somewhere in the State Department. It is a description of the blockade with a word attached to it that the blockade does not earn.
The water already belongs to somebody
The Strait of Hormuz is not open ocean and it is not unclaimed. Iran sits on the north coast, Oman on the south, and at the narrowest point the gap between them is a little over twenty nautical miles. Two twelve-mile territorial seas cover the entire width. The traffic separation scheme that tankers actually use runs through Omani water off the Musandam peninsula, with Iranian water on the other side.
Everything that transits the strait, including American warships, does so under transit passage. That is a right of movement through somebody else’s territorial sea. It carries obligations, it can be exercised by any flag, and it does not create title. A country that sails through a strait a great many times does not acquire it, any more than a driver acquires a road.
So there is no legal object for the declaration to attach to. There is no residual sovereignty sitting unclaimed in the middle of the channel waiting for someone to pick up. To make Hormuz American territory you would have to take it from Iran and Oman, and taking territory by force stopped being a route to valid title in 1945. Washington has spent the last four years making exactly that argument about Crimea, Donetsk and Zaporizhzhia. The argument does not survive contact with a strait.
The toll is the real object
The declaration language is new. The underlying idea is not. Last month Trump floated the United States acting as “guardian” of the strait while collecting a twenty percent fee on goods moving through it. Iran has its own version, a draft transit bill with fines pegged to cargo value. Both sides have now proposed charging the world for the use of a waterway neither side is entitled to charge for.
That is where the sovereignty language earns its keep. You cannot invoice traffic in transit passage. The regime exists precisely to stop coastal states from monetising chokepoints, and a toll would be illegal whether Tehran or Washington collected it. But if the water were American territory, the fee stops looking like extortion and starts looking like a customs schedule. The declaration is the predicate for the invoice.
Watch for whether anything moves on the fee. That is the tell for whether this was a rally line or a policy under construction.
What Tehran got out of it
Iran’s deputy foreign minister for legal affairs, Kazem Gharibabadi, replied within hours: the strait cannot be seized by tweet, by aircraft carrier, by decree, or by a campaign speech. It has been Iranian, is Iranian, will remain Iranian, and will open and close on Iranian command for as long as Washington refuses to accept defeat.
That is a gift of a talking point and it did not cost him anything to write. Iran has spent this war trying to convert a military position it is losing into a legal position it can hold. Sovereignty over the strait is the strongest card in that hand, and Trump just made the American position sound like annexation rather than access. Every non-aligned foreign ministry that has been quietly uncomfortable with the blockade now has a cleaner reason to say so out loud.
Oman is the one who should be angriest
The south coast of the strait is Omani. The shipping lanes run through Omani water. Muscat has been the standing back-channel to Tehran for the better part of two decades, it is hosting the corridor talks, and it is the reason there is any negotiating architecture left at all.
Trump did not mention Oman. In a claim to own the waterway, that omission is the message. A mediator who has just been told, in front of a crowd, that the water it administers is about to become someone else’s territory has fewer reasons to keep spending its credibility on the file.
Where this lands
The most likely reading is improvisation. The speech was about crime and gas prices, the line drew applause, and Trump has an established habit of converting military facts on the ground into property language, which is roughly what he did with Venezuelan oil three sentences later in the same passage.
The problem is that improvisation is now load-bearing. Control of the strait was already the central obstacle in the ceasefire talks. Access is negotiable. Title is not. Any formula that lets Tehran climb down has to be one Iranian negotiators can present at home as preserving sovereignty, and the president of the United States just told them on camera that sovereignty is what he intends to take.
The blockade is real. The wall of steel is real. The territory is a word.