What Control of the Strait of Hormuz Actually Means
President Donald Trump's August 12 Truth Social post did say that the United States had total control of the Strait of Hormuz and that it might keep that control. The existence of the statement is verified by CBS News' report and the linked post. The statement's operational meaning is a separate question.
Geography and legal passage
The strait lies between Iran and Oman and connects the Persian Gulf with the Gulf of Oman and the wider Arabian Sea. The US Energy Information Administration identifies it as a major oil chokepoint: about 21 million barrels per day crossed it in 2022, roughly 21% of global petroleum-liquids consumption, and about one-fifth of global liquefied-natural-gas trade also used it.
The United Nations Convention on the Law of the Sea describes transit passage through qualifying international straits as a right that shall not be impeded. Articles 38 and 44 do not transfer sovereignty to a passing navy, and the coastal states retain sovereignty subject to the passage regime. A naval power can patrol, escort, board, or attack under a claimed military operation, but those actions are not the same as owning the waterway or suspending legal passage for everyone.
Presence, de facto control, and markets
Current reporting says only eight vessels crossed on Tuesday, compared with about 130 a day before the war, and says US Central Command reported disabling three vessels, boarding two, and redirecting 55. That demonstrates significant ability to disrupt selected traffic. It does not prove that every ship can pass safely at US direction, that Iran has lost every ability to threaten shipping, or that a legal blockade is universally accepted. In practical terms, de facto control would mean a power can reliably determine who transits, on what terms, and at what risk.
The market effect can be real even when the legal claim is disputed. Fewer tankers raise insurance, delay cargoes, and reduce available oil and gas. The EIA notes that bypass pipelines exist but have limited capacity. Therefore, the careful conclusion is narrower than the slogan: the United States may have strong military leverage over parts of the route, while shipping data shows disruption rather than undisputed total control.