President Trump told a Long Island audience he will formally declare the Strait of Hormuz, a waterway carrying roughly 20 percent of the world's oil, a territory of the United States, escalating American claims over the chokepoint as the war with Iran grinds on.

Trump made the announcement Friday during an address at the Nassau County Police Academy in New York, pivoting from a speech on domestic crime to the broader conflict in the Persian Gulf. The declaration would mark the most aggressive assertion of U.S. authority over the strait since American forces first imposed a naval blockade there months ago.

The Hill reported Trump's remarks, which came roughly six months into the U.S. war with Iran. The president offered no details on what legal or executive mechanism he would use to claim sovereignty over a waterway bordered by Iran to the north and Oman to the south, two nations that currently hold jurisdiction over the strait under international law.

His exact words left little ambiguity about his intent. Trump told the crowd:

"After we finish defeating Iran, which is being very badly defeated, pretty soon I'll be declaring the Hormuz Strait a territory of the United States."

The crowd at the police academy responded with enthusiastic applause, Just The News reported. Trump framed the move as a natural extension of the American military posture already in place, a posture built on two separate deployments of a U.S. naval blockade in the strait since the conflict began.

A naval blockade already controls the waterway

The U.S. military footprint in the strait is already substantial. American forces have redirected 62 commercial vessels, disabled three, and boarded two since the blockade went into effect, Breitbart reported. Trump has twice deployed the blockade, claiming what the administration calls "U.S. supremacy" over the transit of oil exports from the region.

The practical result: the United States already exercises de facto control over the most important oil chokepoint on earth, even without a formal territorial declaration. About one-fifth of the world's oil and gas supply passes through the narrow waterway connecting the Persian Gulf to the Gulf of Oman.

That control has come at a cost. The war and the closure of the strait have driven energy prices higher globally. Trump addressed the pain at the pump directly during his Long Island remarks.

He told the audience:

"When you have to pay a little bit more, you're at $4. It's okay. I'll never apologize. I did the right thing."

The president's willingness to own the price spike, rather than deflect blame, stands in contrast to the approach previous administrations have taken when energy costs climb. Trump has consistently vowed forceful retaliation against Iranian aggression, and the territorial claim represents the furthest reach of that posture yet.

Iran refuses to budge, and keeps attacking ships

Tehran's response was swift and dismissive. Iran's Persian Gulf Strait Authority posted on the social platform X on Wednesday, days before Trump's Long Island speech, pushing back on any American claims to the waterway.

The authority's post on X stated that ownership claims do "not change the reality: the Strait of Hormuz remains blocked and will not be reopened until Iran's conditions are accepted." The specific conditions Iran has set for reopening the strait were not detailed in the post.

Iran's defiance has not been limited to social media. On Friday evening, the same day Trump made his territorial announcement, Iranian forces attacked a ship affiliated with the Abu Dhabi National Oil Company in the strait, Fox News reported. Bahrain condemned the strike as a "flagrant violation of international law, the United Nations Convention on the Law of the Sea, and U.N. Security Council Resolution 2817."

Bahrain's Foreign Ministry went further, urging the U.N. Security Council to "compel Iran to stop the aggressive attacks it launches against commercial ships and oil tankers in the Strait of Hormuz." The pattern of Iranian strikes on commercial shipping underscores why the administration has moved to assert direct control over the waterway. Trump had earlier declared the U.S. the "Guardian" of the strait and imposed a toll on cargo transiting the chokepoint.

A collapsed peace deal set the stage

The escalation did not happen in a vacuum. A preliminary peace deal between the United States and Iran, signed June 17, fell apart after Iran fired on commercial ships in a U.S.-approved sea lane, the New York Post reported. That collapse hardened the administration's position and eliminated what had been the clearest diplomatic off-ramp.

NATO allies have refused to assist in the conflict, leaving the United States to shoulder the military burden alone. The lack of allied support has not slowed the administration's posture. If anything, it has accelerated it, Trump's territorial claim is the logical next step for a president who has already ordered strikes on 80 Iranian targets after Tehran shattered a previous ceasefire.

Treasury Secretary Scott Bessent added an economic dimension to the pressure campaign. Bessent teased a new round of sanctions he described as unprecedented in scope.

"Watch this space for more announcements coming next week because we are going to apply measures like have never been seen in the history of economic isolation on a country."

Bessent's "Economic Fury" sanctions package, the administration's own branding, would represent the most aggressive financial pressure the U.S. has ever applied to a single nation, if the Treasury secretary's description holds. No specific details of the package were released Friday.

No legal mechanism, but a military reality

The most conspicuous gap in Trump's announcement is how, exactly, the United States would formalize a territorial claim over a waterway located thousands of miles from American shores, bordered by two sovereign nations, and governed by international maritime law. Trump offered no executive order, no proclamation, and no reference to any legal authority during his remarks.

That matters, but perhaps less than it might seem. The administration has already demonstrated its willingness to act first and build the legal framework later. Trump has faced court challenges to executive actions before, and a formal territorial declaration would almost certainly draw legal scrutiny both domestically and internationally.

But the military facts on the ground, or on the water, tell their own story. With 62 commercial vessels redirected, a blockade deployed twice, and the U.S. Navy controlling transit through the strait, the declaration would formalize a status quo the American military has already imposed by force.

Iran continues to insist the strait is sovereign territory and refuses to reopen it without conditions. The administration continues to tighten the vise, militarily and economically. Neither side shows any inclination to back down.

The question is not whether the United States can physically control the Strait of Hormuz. It already does. The question is whether the rest of the world will accept what Trump is plainly telling them comes next.

When a president tells you what he plans to do, the smart bet is to believe him.