Earlier this week, three commercial tankers were attacked as they tried to cross a US-recommended route through Omani waters. Iran has repeatedly said the only “safe” route is a separate route through its waters.
The incident prompted a series of US strikes in which 17 people were killed and 115 injured, according to Iranian officials. Iran responded with strikes on US allies in the Gulf.
The exchange raised tensions, with US President Donald Trump declaring the Iranian attacks mean the ceasefire is over. Iran’s Foreign Minister Abbas Araghchi has accused the US of violating the deal.
However, the US leader said talks would still continue and mediators were trying to revive the process. US media has reported that Iran told American officials the attacks on tankers were a mistake and blamed a rogue internal group.
American officials say they have conveyed through mediators the demand that Iran publicly state that the Strait of Hormuz, a vital international shipping route, is open and pledge to stop firing on commercial ships.
The closure follows a call for revenge from Iranian Supreme Leader Ayatollah Mojtaba Khamenei, in his first public statement since taking leadership.
His father and predecessor, Ali Khamenei, was killed in an air strike on 28 February, on the first day of the US-Israeli war against Iran. He was buried in his home city of Mashhad on Friday.
Reading a statement on state television, the new ayatollah said that vengeance was the “will of the nation”.
“We pledge to avenge the blood of the martyred leader and all the martyrs of these two wars from the criminal and disgraced killers,” he was quoted as saying.
“The matter depends neither on my personal existence nor on that of other officials. Whether we are present or not, it will come to pass.”
