Two US Navy warships transited the Strait of Hormuz at the start of an operation to clear the strategic waterway of mines laid by Iran, US Central Command (Centcom) said on Saturday.

The announcement — which marks the first such transit since the US-Israeli war on Iran began — came shortly after President Donald Trump said Washington had started “clearing out” the strait, through which a fifth of the world’s crude oil passes.

“Today, we began the process of establishing a new passage and we will share this safe pathway with the maritime industry soon to encourage the free flow of commerce,” said Centcom commander Admiral Brad Cooper.

The USS Frank E Peterson and the USS Michael Murphy are the guided-missile destroyers involved in the operation, but Centcom said that “additional US forces including underwater drones” could join the effort in coming days.

Earlier, US media outlet Axios reported that the operation was not coordinated with authorities in Tehran.

“We’re now starting the process of clearing out the Strait of Hormuz,” Trump said on his Truth Social platform, calling it “a favour” to countries such as China, Japan and France that “don’t have the Courage or Will to do this work themselves.”

He insisted that Iran is “LOSING BIG!” in the conflict, while acknowledging that Iranian mines in the strategic strait still pose a threat.

“The only thing they have going is the threat that a ship may ‘bunk’ into one of their sea mines,” Trump wrote.

The key shipping lane off the coast of Iran has been virtually blocked by Tehran since the United States and Israel started bombing Iran on February 28, though reopening the strait was ostensibly a condition of the ceasefire put in place earlier this week.

Senior Iranian and American officials held face-to-face negotiations in Islamabad on Saturday in a bid to bring an end to a conflict that has plunged the Middle East into violence and sent shockwaves through the world economy.

In an earlier post, Trump said that empty tankers were headed to the United States from around the world to purchase oil, without providing details.