Iranian Foreign Minister Abbas Araqchi said the Strait of Hormuz was open following a ceasefire accord agreed in Lebanon, while US President Donald Trump said he believed a deal to end the Iran war would come "soon", although the timing remains unclear.
Araqchi said in a post on X the Strait was open for all commercial vessels for the remainder of the US-brokered 10-day truce between Israeli forces and Iran-backed Hezbollah agreed on Thursday between Israel and Lebanon.
He said the passage of ships would need to be along the route that Iran's Ports and Maritime Organisation had announced.
The US-Israeli conflict with Iran, which started on February 28, has killed thousands of people and destabilised the Middle East. The conflict also effectively closed the Strait of Hormuz, through which a fifth of the world's oil and liquefied natural gas usually transits, threatening the worst oil shock in history.
Oil prices fell by about 9 percent, extending earlier losses, following Araqchi's post.
The International Monetary Fund this week lowered its forecasts for global growth and warned the global economy risked tipping into recession if the conflict was prolonged.
US blockade remains in place
Shortly after Araqchi's statement, Trump posted on Truth Social: "IRAN HAS JUST ANNOUNCED THAT THE STRAIT OF IRAN IS FULLY OPEN AND READY FOR PASSAGE".
However, Trump said the US military blockade of ships sailing through the Strait to Iranian ports - announced after talks with Iran last weekend in the Pakistani capital Islamabad ended without agreement - remained in place.
He said that blockade will remain in full force until "our transaction with Iran is 100% complete", which he said should happen very quickly given that most points were already negotiated.
Trump had said on Thursday that talks could happen as soon as this weekend, although that was looking increasingly unlikely by Friday afternoon given the logistics of assembling officials in Islamabad, where the talks are expected to take place.
Despite Trump's optimism, Iranian sources told Reuters on Friday that some "gaps remained to be resolved" before reaching a preliminary deal and senior clerics leading Friday prayers struck a defiant tone.
In a sermon in Tehran, cleric Ahmad Khatami said: "Our people do not negotiate while being humiliated," while in the central city of Isfahan, the imam said: "We did not accept the terms proposed by the other party."
In Islamabad, troops were seen along routes leading into the capital on Friday, but roads were still open and the government had not issued orders for businesses to shut down, as they did prior to the last meeting.
Backdoor diplomacy progress
A Pakistani source involved in mediating between the US and Iran said on Friday there was progress in backdoor diplomacy and that an upcoming meeting between the two sides could result in the signing of a memorandum of understanding, followed by a comprehensive deal within 60 days.
"Both sides are agreeing in principle. And technical bits come later," the source said on condition of anonymity.
One of the key sticking points has been over Tehran's nuclear ambitions, with the US proposing at last weekend's talks a 20-year suspension of all Iranian nuclear activity. Tehran suggested a halt of three to five years, according to people familiar with the proposals.
Iran has demanded international sanctions on it be lifted and Washington has pressed for any highly enriched uranium to be removed from Iran. Two Iranian sources have said there were signs of a compromise on the HEU stockpile, with Tehran considering shipping part of it out of the country.
Trump told reporters outside the White House on Thursday that Iran had agreed to "give us back the nuclear dust", but Iran's state media outlet Mizan disputed that claim on Friday, highlighting ongoing differences.
No negotiation regarding the "transfer of Iran's highly enriched uranium to America had ever taken place, and naturally there is no agreement on this matter either", it said, citing sources.
Lebanon ceasefire goes into effect
The U.S.-backed ceasefire agreed between Israel and Lebanon to end the fighting between Israel and Hezbollah appeared to be largely holding on Friday, despite some Lebanese Army reports of violations by Israel.
Mediator Pakistan said on Thursday that a parallel ceasefire in Lebanon was an essential component of any talks on a deal to end the conflict in Iran.
The conflict in Lebanon was reignited on March 2 when Hezbollah opened fire on northern Israel in support of Tehran, prompting an Israeli offensive that authorities say has killed 2,000 people.
There was no immediate comment from the Israeli military on the reported ceasefire violations on Friday.
