US President Donald Trump announced on 15 June 2025 that the United States and Iran had concluded a deal to reopen the Strait of Hormuz and lift the US naval blockade — a development he described as a historic breakthrough after months of conflict that rattled global energy markets and stoked fears of a broader regional war.

What Trump Announced

Trump declared the agreement complete in a post on social media, writing: ‘The Deal with the Islamic Republic of Iran is now complete. Congratulations to all!’ In a follow-up post, he authorised the immediate reopening of the waterway and the removal of the US naval blockade. ‘Ships of the World, start your engines. Let the oil flow!’ he wrote.

The President said the deal would be formally signed on Friday and tied the Strait’s reopening to mine-removal operations in the waterway. ‘With the opening of the Strait upon the signing of the Deal on Friday, for purposes of mine removal, oil will flow on both ends again for the Region, and the World!’ he added.

What the Agreement Covers

The White House did not immediately release an official text of the agreement, and Trump did not disclose specific terms. His statements indicated that the immediate focus is restoring freedom of navigation through the Strait and removing barriers to commercial shipping.

According to The Wall Street Journal, US and Iranian officials had agreed on an interim framework aimed at ending hostilities and creating space for further negotiations. The Washington Post similarly reported that the accord would end the blockade and reopen the Strait while leaving other major issues — including Iran’s nuclear programme and US sanctions — for a separate phase of talks. The New York Times described the arrangement as a cease-fire that could pave the way for broader bilateral negotiations.

Why the Strait of Hormuz Matters

The Strait of Hormuz is one of the world’s most critical energy chokepoints, through which a substantial share of global seaborne oil trade passes. Disruptions to shipping through the waterway over recent months contributed to significant volatility in global energy prices and raised alarm among oil-importing nations, including India, which depends heavily on Gulf crude supplies.

The US naval blockade, imposed during the period of conflict, had effectively constrained tanker movement through the strait, sending shockwaves through commodity markets worldwide.

Trump’s Diplomatic Claims

Trump cast the agreement as evidence of his administration’s unique diplomatic capacity. ‘Many presidents have tried to make Peace with Iran, and all have failed before me,’ he wrote. ‘This Great Deal will bring Peace and Security to the whole Region.’

The announcement followed a period of intense diplomatic activity, with several international outlets reporting that US and Iranian negotiators had moved closer to an understanding through weeks of talks involving regional mediators.

What Remains Unresolved

Notably, Trump’s posts did not address Iran’s nuclear programme, US sanctions, or the broader set of issues that have divided Washington and Tehran for decades. Analysts and critics are likely to scrutinise whether a deal limited to navigation rights and a blockade withdrawal can hold without progress on those deeper fault lines. The formal signing ceremony, expected on Friday, will be closely watched for details the social media posts did not provide.