Less than two weeks after Iran and the US inked an agreement to end the conflict, fighting resumed as the two exchanged attacks following Washington's strikes on Iran, blaming Tehran for an attack on a ship.
US forces struck Iranian targets on Sunday and the Iranian Revolutionary Guard Corps (IRGC) attacked targets in the Gulf states of Kuwait and Bahrain, both of which host US military facilities.
In southern Lebanon, Israel shelled fighters from the Iran-backed Hezbollah militia, shortly after the framework agreement signed between Israel and Lebanon.
Iran claims control of Hormuz again
Iran has sole control over shipping through the Strait of Hormuz for the next 30 days, Foreign Minister Abbas Araghchi said of the vital waterway for global trade.
It will "once again be placed entirely under Iranian administration within the next 30 days," he told a press conference in the Iraqi capital, Baghdad.
Araghchi reiterated that responsibility for the strait lies solely with Iran. "Any interference or attempt to create parallel structures would further complicate the situation, generate additional tensions and delay the reopening of this strategically vital waterway," he said.
Second US attack on Iran since the framework agreement
Iran's announcement came after US forces launched attacks on the country on Saturday night, the second wave since the signing of the framework agreement.
Several targets including air defence positions, drone depots and surveillance infrastructure were struck, the US Central Command said.
Iranian attacks on Kuwait and Bahrain
Iran's Islamic Revolutionary Guard Corps meanwhile said the navy and air force had destroyed eight US Army infrastructure targets in a missile and drone operation. The targets were at the US Air Force base Ali Al-Salem in Kuwait and the US 5th Fleet in Mina Salman, Bahrain, they said. It was not initially possible to verify the statement.
The Kuwaiti army said its air defences were countering enemy missile and drone attacks during the night. Bahrain confirmed an Iranian attack involving drones and missiles.
Strait of Hormuz status contested
The conflict is resurging as the situation in the Strait of Hormuz remains unresolved. After the US and Israel attacked Iran on February 28, Tehran effectively brought shipping through the strait to a standstill in a bid to use this as leverage to negotiate an end to the conflict.
The opening of the strait is a central component of the framework agreement - but how and under what conditions shipping is to pass through the strait in future is unclear.
The attack on the Singapore-flagged cargo ship on Thursday, when the conflict flared up again, came after Iran's IRGC warned passage would only be safe on routes specified by Tehran.
On Saturday, the UK Maritime Security Authority said another cargo ship was hit by a projectile.
Trump threatens Iran
US President Donald Trump said Washington's attack was in retaliation for Tehran breaching the ceasefire. "It is very possible that they will never learn! There may come a point where we can no longer be reasonable and will be forced to militarily complete the job that we very successfully started!" Trump wrote on his Truth Social platform. Should that happen, "the Islamic Republic of Iran will no longer exist!" he said.
