Donald Trump has threatened new strikes on a nuclear site as well as Iranian military ships on the Strait of Hormuz.
The US president said he was informed by the US Navy that all mines “have been removed” from within the Strait.
In a post on Truth Social, he wrote: “I have just been informed by the United States Navy that all mines have been removed and/or detonated from within the International Waters of the Strait of Hormuz.
“Iran has been notified that any ship or boat placing new mines will be immediately and systematically destroyed. Through Space Force, we are watching every square inch of the Strait, as we are, also, with Pickaxe Mountain and the already destroyed three other Nuclear sites.”
It comes as Omani Foreign Minister Badr al-Busaid met with his Iranian counterpart, Abbas Araghchi, in Tehran, to discuss a framework for managing ship traffic in the Strait of Hormuz.
A joint statement by the two countries said the proposed framework includes a “joint temporary navigational corridor” and both countries working to clear mines from the waterway.
Meanwhile, the Trump administration has threatened that any country with financial ties to Iran will face US sanctions.
Iran and Oman issue statement on talks to manage the strait
Omani Foreign Minister Badr al-Busaid met with his Iranian counterpart, Abbas Araghchi, in Tehran, Iran's capital, to discuss a framework for managing ship traffic in the Strait of Hormuz.
A joint statement by the two countries, located on opposite sides of the narrow strait, said the proposed framework includes a “joint temporary navigational corridor” and both countries working to clear mines from the waterway.
The statement said Iran and Oman will continue technical negotiations toward establishing a permanent shipping corridor and an agreement on the future administration of the strait.
About a fifth of the world’s traded oil passed through the strait before the United States and Israel attacked Iran on Feb. 28.
It’s unknown whether the US will accept the emerging deal.
US President Donald Trump last week threatened to bomb Oman if it “gets in the way” of American efforts to reopen the strait.
US Secret Service aware of Iranian video threat against Barron Trump
The US Secret Service is aware of a video broadcast by Iranian state television discussing a potential plot to assassinate US President Donald Trump's youngest son, a spokesperson said on Tuesday.
"The U.S. Secret Service is aware of the video and investigates anything that can be perceived as a threat toward our protectees. Out of concern for operational security, we do not discuss matters of protective intelligence," Secret Service spokesperson Nate Herring said in an email.
A three-minute video broadcast by Iranian state TV discussed a potential plot to assassinate Barron Trump, 20, claiming that he was being monitored and alleging that a $10 million bounty had been offered for his killing.
The United States and Iran have kept up hostile rhetoric during a nearly six-month-old war started by the US and Israel in February.
Reuters reported earlier this month that the US has received several warnings from Israel over the past year that Iran intended to assassinate Trump, according to officials, including before a secret Air Force One ruse in Turkey.
Oil transits through Strait of Hormuz down
Oil transits through the Strait of Hormuz were at 5 million barrels per day on Monday, provisional data from shiptracker Vortexa showed.
This is down from more than 20 million per day before the war or about one of every five barrels consumed worldwide.
Watch: Hegseth refuses to rule out US strikes against Iran
What's included in the new US sanctions campaign?
U.S. Treasury Secretary Scott Bessent announced what his department called "an economic onslaught" against Iran on Monday that combined new sanctions with threats against Tehran's trading partners.
The Treasury's Office of Foreign Assets Control (OFAC) has added specific sanctions on nearly 60 entities, individuals and vessels that it says are enabling Iranian activity.
The new sanctions target the Iranian defence ministry's ballistic and nuclear procurement network, a cyber group the U.S. says is behind attacks on its infrastructure, and the shipping, trading and financial network involved in Iranian oil sales.
OFAC has also suspended several licences that previously allowed some remittance payments to Iran and Iranian access to the U.S. cultural and academic system.
There are gas lines in Iran, but no sign yet that its leaders will bow to US sanctions
Lines have grown outside gas stations across Tehran in recent weeks as the United States has tightened its blockade and threatened more severe sanctions, with some people waiting for two hours or more to fill up.
The uncertainty deepened on Tuesday, after U.S. Treasury Secretary Scott Bessent vowed to fully sever the country from the global economy. In recent days, Iranian officials have spoken of a possible reduction in heavy gas subsidies as they seek to endure the tightening blockade.
“Maybe we will face a shortage of fuel,” said Hashem Abadi, a 34-year-old barber. “I rush to the filling stations whenever my tank is down to half or so.”
Read the full story below.
Watch: Iranian finance minister claims Tehran 'fully prepared for US sanctions'
US 'prepares to send diplomats back to Middle East embassies'
The US State Department is preparing to return diplomats to embassies in the Middle East that were evacuated before and during the war with Iran, the New York Times reported on Tuesday, citing an internal State Department document.
The return of foreign service officers and the scaling back of emergency measures at U.S. missions in the region could begin as early as this week, the report said.
Embassies slated to restore higher staffing levels include those in Israel, Lebanon, Saudi Arabia, Qatar, Jordan, Oman, Iraq and Kuwait, according to the report.
Oman and Iran propose temporary shipping lane through Strait of Hormuz
Oman and Iran have agreed on a proposed framework to resume safe navigation through the Strait of Hormuz that includes establishing a joint temporary shipping lane and a project to demine the waterway, they said in a joint statement on Tuesday.
Oman's foreign minister arrived in Iran earlier on Tuesday for talks with his Iranian counterpart on future arrangements for the strait.
Trump's new sanctions could be seen by Iran as tantamount to 'military escalation' - expert
Donald Trump’s “economic D-Day” could be interpreted by Iran as tantamount to a military escalation, experts have warned.
Professor Maziyar Ghiabi, Director of the University of Exeter’s Centre of Persian and Iranian Studies, said: “The latest US measures against Iran include a wide and all-encompassing economic strangulation strategy which aims to cut off Iran’s economy from the wider neighbourhood and traditional partner networks.
“It is a sign of US failure at achieving its goals through military means, but also a risky move which many in Iran will see as tantamount to a military escalation.
“It is also likely to trigger a backlash from regional countries in West Asia and nations that have sought a friendly relationship with Iran. China, Türkiye, India, Iraq, and others may find it both impractical and degrading to fall in line. This step may well be the prelude for a further expansion of the conflict.”