At 10:00 a.m. Eastern Time on April 13, the United States Navy began enforcing a blockade of all maritime traffic entering or exiting Iranian ports. Read the CENTCOM order carefully. Then read the president’s Truth Social post from twelve hours earlier. They do not say the same thing.

Trump posted: “Effective immediately, the United States Navy, the Finest in the World, will begin the process of BLOCKADING any and all Ships trying to enter, or leave, the Strait of Hormuz.”

CENTCOM posted: “CENTCOM forces will begin implementing a blockade of all maritime traffic entering and exiting Iranian ports… CENTCOM forces will not impede freedom of navigation for vessels transiting the Strait of Hormuz to and from non-Iranian ports.”

The president ordered a strait blockade. The military implemented a port blockade. One covers the entire waterway. The other covers only Iranian destinations. The gap between these two directives is the gap between a global energy catastrophe and a targeted revenue choke. And it was decided not by negotiation, not by Congress, not by international law, but by the verb choice of a CENTCOM press officer in Tampa, Florida, sometime between Sunday afternoon and Sunday evening.

Al Jazeera noted the “conflicting information.” This is not conflicting information. This is two architectures of American power expressing themselves simultaneously. The political architecture says “total blockade” because it projects maximum pressure. The military architecture says “Iranian ports only” because it preserves the 80 percent of Gulf oil transiting to allies. The president speaks to audiences. CENTCOM speaks to mariners on Channel 16.

Iran’s armed forces responded: the US imposition of restrictions on vessel movement in international waters is “an illegal act and amounts to piracy.” The IRGC Navy simultaneously claims the strait remains “open for non-military vessels under specific regulations” and under “full Iranian control.” Iran calls the American blockade piracy while operating its own blockade under different rules on the same water.

Three competing sovereignty claims on a single waterway. The United States claims the right to block access to Iranian ports. Iran claims the right to regulate all transit under its toll system. And the UN Convention on the Law of the Sea, which the United States has never ratified, claims the strait is an international waterway where freedom of navigation is guaranteed.

The practical result is a two-tier waterway operating under dual authority. Vessels bound for Dubai, Jebel Ali, Ras Tanura, or any non-Iranian Gulf port can transit freely under CENTCOM’s carve-out. Vessels bound for Bandar Abbas, Kharg Island, or any Iranian port will be interdicted regardless of whether they paid the IRGC’s Bitcoin toll. The toll does not override the blockade. The blockade does not cover vessels that never approach an Iranian port. And twelve Iranian supertankers sit loaded and stationary in the Gulf of Oman, waiting to see which authority prevails.

CNN analysts noted the precedent. If the United States can blockade a sovereign nation’s ports under a presidential proclamation without congressional authorization or UN mandate, any great power can invoke the same framework at any chokepoint. The Taiwan Strait. The Malacca Strait. The template is live. It went into effect at 10:00 a.m. today.

The war started with the United States trying to open the Strait of Hormuz. It has now produced two competing systems for controlling who uses it and neither of them is “open.”