Iran’s Supreme Leader Mojtaba Khamenei warned the Iranian navy was ready to inflict “new bitter defeats” on the U.S. and Israel, in a message read on Iranian state TV.

The U.K. Maritime Trade Operations (UKMTO) reported that two IRGC gunboats had opened fire on a tanker 20 nautical miles northeast of Oman without issuing a radio challenge. The vessel’s captain reported the incident to UKMTO; no injuries were reported and the tanker was said to be safe.

In a separate incident, an unknown projectile hit a container vessel, damaging some of the containers, the UKMTO said.

The renewed closure of the strait came after U.S. President Donald Trump said the American naval blockade of Iranian ports “will remain in full force” until Tehran reaches a deal with Washington, including on its nuclear program.

Iranian foreign ministry earlier rejected any possibility of transferring Iran’s enriched uranium to another country, stressing that such an option has never been considered. Ministry spokesperson Esmaeil Baqaei on Friday emphasized that Iran’s enriched uranium will under no circumstances be transferred elsewhere, rejecting a suggestion by Trump that Washington would work with Iran to recover its enriched uranium, which would be moved to the U.S., according to reports.

Bloomberg reported that Trump told the outlet that Iran has agreed to suspend its nuclear program indefinitely. Trump asserted in a telephone interview on Friday that any moratorium on Iran’s nuclear activities would not expire, saying it would be “unlimited,” according to the report.

The U.S. Treasury Department, meanwhile, on Friday extended its temporary waiver on sanctions on Russian oil shipments to ease shortages from the Iran war, days after Treasury Secretary Scott Bessent ruled out such a move. The Trump administration did not immediately explain the reversal.

The renewed waiver issued late Friday permits countries to purchase Russian oil loaded on vessels as of Friday through May 16. The earlier waiver expired on April 11.