A UNITED STATES submarine sank an Iranian warship in the Indian Ocean today.

This came as Washington and Israel intensified their unprovoked and illegal bombardment of Iran’s security forces on Wednesday and as Tehran vowed to completely destroy the US’s Middle East military and economic infrastructure.

The ferocity of the attacks on Iran was so intense that state television announced the mourning ceremony for Iranian Supreme Leader Ayatollah Ali Khamenei, who was killed in the conflict, would be postponed.

At least 1,045 people have been killed in Iran, the country’s Foundation of Martyrs and Veterans Affairs said today. Eleven people in Israel have been killed. More than 50 people have been killed in Lebanon, according to the Health Ministry. Six US troops have been killed.

The fighting has disrupted the supply of the world’s oil and gas, snarled international shipping and stranded hundreds of thousands of travellers in the Middle East.

US Defence Secretary Pete Hegseth said that a torpedo from a US submarine sank an Iranian warship in the Indian Ocean Tuesday night, saying the strike was the first such attack on an enemy since World War II.

Sri Lankan authorities said that 32 people were rescued from the ship, which sank off their country’s coast. They said others died, without giving a number.

Israel said it hit buildings associated with Iran’s Basij, the all-volunteer force of the paramilitary Revolutionary Guard.

The Israeli military also said that it hit buildings associated with Iran’s internal security command. It also pounded towns near Beirut.

Iranian television showed the ruins of buildings in the centre of the capital of Tehran. Strikes have also been reported in the holy Shi’ite seminary city of Qom, targeting a building associated with a clerical panel set to pick Iran’s next supreme leader.

Iranian media said it was empty at the time.

Iranian TV has begun calling the conflict the “Ramadan war,” a reference to the holy Muslim fasting month currently taking place.

Iran has also struck around the region, including across Bahrain, the home to the US Navy’s 5th Fleet.

Iran’s paramilitary Revolutionary Guard issued its most-intense threat yet, saying the strikes against it would “be at the cost of the complete destruction of the US’s military and economic infrastructure,” in the region.

The United Kingdom Maritime Trade Operations reported today that a container ship was attacked on Wednesday afternoon while passing through the Strait of Hormuz, the narrow mouth of the Persian Gulf through which about a fifth of the world’s oil is shipped.