in brief
- The US and Iran have exchanged fire over the continued stopping of traffic in the Strait of Hormuz.
- Iran has launched drones and missiles at US bases in Kuwait and Bahrain.
United States President Donald Trump said Iran would "no longer exist" if the US is "forced" to resume the war, as he accused the country of violating a ceasefire on Sunday.
The threat came after US forces said they struck "multiple" Iranian targets in another tit-for-tat response to attacks on shipping in the vital Strait of Hormuz.
"United States aircraft just struck Iranian missile and drone storage locations, and coastal radar sites, for violating the Cease Fire Agreement, AGAIN!" Trump wrote on Truth Social.
"There may come a point when we are no longer able to be reasonable, and will be forced to militarily complete the job that we very successfully started," he continued.
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"If that happens, the Islamic Republic of Iran will no longer exist!"
The clashes brought new tension to the negotiating process meant to end a war launched by the US and Israel at the end of February.
They also underlined the risks still facing one of the world's most important sea lanes for oil and other commodities.
US Central Command said it had struck 10 Iranian military targets in response to an Iranian drone attack on the Panama-flagged oil tanker Kiku, which was carrying some two million barrels of crude.
The US military said the response targeted "surveillance infrastructure, communication systems, air defense sites, drone storage facilities, and minelayer capabilities".
Iranian media reported several explosions in the Sirik and Qeshm areas of southern Iran.
In retaliation, Iran has launched multiple missiles and drones toward neighbouring countries, including Bahrain and Kuwait, a US official confirmed to the Reuters news agency.
The official, speaking on condition of anonymity, said there were no reported US casualties or major impacts or damage to US facilities in the Middle East at this time.
Iran's Islamic Revolutionary Guard Corps has said in a statement that US violations of the ceasefire are "contrary" to the recently signed "memorandum of understanding" and "will result in the complete halt of all diplomatic processes".
"If the aggression is repeated, our response will be broader," it added.
Israel, meanwhile, launched strikes in Lebanon. Hezbollah's leader Naim Qassem rejected a deal to end that conflict, which has also threatened to derail the wider US-Iran peace effort.
Iran called "these brutal attacks ... a blatant violation" of the interim truce deal.
Shipping lanes under fire
The flare-ups in violence highlighted ongoing wrangling over control of the Strait of Hormuz.
Iran has warned vessels not to enter or leave the Gulf through the strait without permission, but ships have continued to move, some using a route not authorised by Iran.
HA Hellyer, of London think tank the Royal United Services Institute, said: "Iran is likely to continue calibrated, low-level coercive activity in and around the Strait of Hormuz ... to create persistent pressure on international shipping without triggering a wider conflict."
He said November's US midterm elections for Congress give Washington "incentives for a quicker agreement" while, for Iran, "a drawn-out negotiation accompanied by controlled pressure in the strait can work to its advantage".
Despite the latest flare-up, oil prices have fallen sharply on hopes that traffic through Hormuz would recover. In peacetime, it carries about a fifth of the world's oil and liquefied natural gas exports.
The economic impact on Iran remains unclear, but on Saturday, the country's statistics agency said that year-on-year inflation had hit 88.6 per cent, up from 68 percent in February.
Lebanon threats
Lebanon was drawn into the Middle East war in early March, when Hezbollah launched rockets at Israel in support of Iran. That provoked an Israeli invasion and fighting that has also undermined the US-Iran ceasefire.
Israel and Lebanon signed an agreement on Friday supported by the US aimed at securing long-term peace between the two countries.
Hezbollah's chief Qassem rejected the deal a day later, calling it "humiliating, shameful and a surrender of sovereignty".
He instead called for the full implementation of Washington's deal with Iran, which includes an end to the fighting in Lebanon.
Hezbollah has repeatedly called for a full Israeli withdrawal from southern Lebanon, but the Washington deal does not appear to provide for that.
Israeli Prime Minister Benjamin Netanyahu has insisted Israeli troops will remain in the so-called security zone they occupy in southern Lebanon, with civilians prevented from returning until Hezbollah is disarmed.
The Israeli premier called the deal "historic" on Saturday and "a blow to Iran and Hezbollah".
But Netanyahu's far-right security minister, Itamar Ben-Gvir, denounced it as "a big mistake" and insisted that only Israeli forces were capable of disarming Hezbollah.
The Israeli military said it carried out an airstrike on Saturday targeting suspected militants in Lebanon's south — the first such attack since Washington announced the agreement between the two countries.
Lebanon's National News Agency then reported early Saturday evening that Israel had carried out fresh strikes in the south of the country.
The health ministry later reported at least one killed and two wounded in an Israeli airstrike on Nabatieh al-Fawqa.
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