A statement said to have been issued by Iran's supreme leader Mojtaba Khamenei warned Saturday that Tehran's navy was ready to defeat U.S. forces, as the foes sparred over the Strait of Hormuz.

Iranian gunboats fired on a tanker in the Strait of Hormuz on Saturday, a British maritime security agency reported, after Iran's military reversed a pledge to open the route to shipping.

No date has been set for the next round of Iran–U.S. peace talks brokered by Pakistan following the failure of an initial round, Iran's deputy foreign minister said on Saturday.

U.S. President Donald Trump said Friday that the United States and Iran would jointly remove uranium from Tehran's nuclear sites with excavators under any peace deal, before the material is transferred to U.S. territory.

Trump's comment came despite Iran's foreign ministry saying earlier that the Islamic Republic's stockpile of enriched uranium would not be transferred "anywhere."

Pakistan's powerful military chief and prime minister on Saturday concluded separate visits aimed at ending the Iran war, with Field Marshal Asim Munir leaving Tehran and premier Shehbaz Sharif headed home from Turkey.

U.S. President Donald Trump told AFP on Friday there were "no sticking points" left for a peace deal with Iran, adding that an agreement was "very close."

U.S. President Donald Trump on Friday welcomed Iran's announcement that the crucial Strait of Hormuz will reopen to shipping, but said a U.S. blockade of Iranian ports would continue until a peace deal is signed.

"THANK YOU!" Trump wrote on his Truth Social platform, saying that Iran had announced the narrow waterway was "FULLY OPEN AND READY FOR FULL PASSAGE."

Oil prices plunged Friday after Iran's Foreign Minister Abbas Araghchi said the vital Strait of Hormuz was "completely open" for commercial tankers and cargo ships during the U.S.-Iran ceasefire.

International benchmark Brent North Sea crude plunged 10 percent to $89.11 a barrel, after earlier falling five percent on U.S.-Iran peace deal hopes.

The leaders of France and the U.K. gathered dozens of countries — but not the United States — on Friday to push forward plans to reopen the Strait of Hormuz, a key oil route choked off by the U.S.-Israeli war on Iran.

The Paris meeting is part of attempts by sidelined nations to ease the impact of a conflict they didn't start and haven't joined, but that has sent the global economy reeling. After the war started on Feb. 28, Iran effectively shut the narrow strait though which a fifth of the world's oil usually passes.

U.S. President Donald Trump said Thursday that Iran has agreed to hand over its store of enriched uranium and that the two sides were "close" to a peace deal to end the war that has engulfed the Middle East.