Iran's Supreme National Security Council said the Strait of Hormuz will not open until the United States "corrects its behaviour," in a hardened position that could shake up talks on a deal to manage the waterway.
Iran's state broadcaster published the statement by the council's secretary, Mohammad Bagher Zolghadr, who is also a commander in the powerful Revolutionary Guard.
The United States must never threaten Iran again, the statement said, and must permanently end the war with Iran and its armed allies in the region. The US must lift the naval blockade of Iranian ports and withdraw its military from the area. It must "completely compensate" Iran for war damage, lift sanctions and "unconditionally" release frozen assets.
The US, which wanted an acceptable deal on the strait first before ending the blockade, had no immediate comment. According to the interim deal signed in June, a schedule to end sanctions and plan on compensation would be part of the final agreement, and negotiations would address frozen assets.
Earlier, Iranian Foreign Minister Abbas Araghchi said they were close to reaching an agreement with Oman on managing the strait, which runs between the two countries.
But the waterway's reopening is contingent on other conditions, he said in remarks shared on social media, blaming the situation on what he called the US violation of the interim deal.
Oman, a mediator Gulf Arab country, said in a statement discussions were ongoing "in a positive and constructive atmosphere," and condemned attacks on ships on the strait.
The strait, crucial to global supplies of oil and natural gas, was considered an international waterway before the war.
The deal Iran and Oman are working to finalise would be temporary, but it would reopen the strait with ships entering the strait through a route close to Iran and exiting through a route close to Oman, according to two sources.
Ships would cross the strait without paying fees or tolls during the interim period.
The agreement is designed to restore an earlier, separate agreement between the US and Iran and restart a 60-day clock for the two countries to negotiate over Iran's nuclear program.
During that time, Iran is expected to be able to sell oil. The current 60-day deadline to negotiate a final deal is due to end in just over a week.
According to the two people who spoke about the talks, the deal is endorsed by members of the Gulf Cooperation Council and expected when finalised to be jointly announced by Iran, Oman, the US, and the International Maritime Organisation of the United Nations. But the people stressed the terms could still change before the deal is final.
Meanwhile, a vessel owned by Abu Dhabi's state-owned ADNOC oil and gas company was attacked while transiting the strait, according to UAE authorities. The Foreign Ministry said Iran fired the missile as part of attacks on commercial shipping.
ADNOC in a statement said there were no casualties following the early Saturday attack. The company said over a dozen of its vessels have been attacked by missiles and drones while transiting the strait since the US and Israel launched the war on Iran in February. One crew member has been killed and 20 others wounded, it said.
Later, the United Kingdom Maritime Trade Operations Centre said a vessel east of the town of Khasab, Oman, had been struck by a projectile that caused a fire that was put out, with the vessel and crew safe. It was not clear whether this was the ADNOC incident.
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