The US is demanding that Iran publicly declare the strategic Strait of Hormuz fully reopened to navigation and pledge not to attack tankers transiting the waterway, which carries around a quarter of the world’s seaborne oil and LNG trade, several news outlets reported on Friday.

The US and Iran have clashed over differing interpretations of the memorandum of understanding (MoU) signed on June 17 regarding the management of the strait. The two countries traded strikes on Wednesday and Thursday after Washington and the Gulf states blamed Tehran for attacks on three commercial ships.

“We expect the Iranians to say... that every channel in the strait will be open and that it will be toll-free,” a US official told reporters on Friday, according to Axios.

US officials told the media they expected Iran to issue a statement accepting those terms after negotiators meet in Oman on Saturday.

“If it is not their position [tomorrow], it is not gonna be a great day for them,” one official said.

In a post on Truth Social on Friday, US President Donald Trump said the talks would continue while also warning that “the Cease Fire is OVER!”

Iranian Foreign Ministry spokesman Esmaeil Baghaei denied Trump’s claim that Tehran had requested a new round of negotiations. He said any violations of the ceasefire by the US would be met with “reciprocal action.”

Iranian media reported that Foreign Minister Abbas Araghchi will travel to Oman on Saturday to meet regional mediators.

Iran’s chief negotiator, Mohammad Bagher Ghalibaf, said on Friday that Tehran remained “distrustful of the Americans” and that “the Iranian nation will never submit to oppression.”

Iran closed the strait to most shipping following the US-Israeli attack on February 28. Tehran has since insisted that all vessels comply with its instructions and use designated shipping routes.

Under the MoU, Iran agreed to “make arrangements using its best efforts for the safe passage of commercial vessels” for 60 days and to negotiate with Oman over the future administration of the Strait of Hormuz.