The Pentagon has not said which American submarine fired the torpedo, except to say it was a fast-attack submarine.

Second Iranian ship enters Sri Lankan waters after US submarine attack, say officials - It comes a day after US forces torpedoed an Iranian vessel off the coast of Sri Lanka

A retired U.S. Navy nuclear submarine commander is offering his perspective on Tuesday's torpedo attack that sank an Iranian warship in the Indian Ocean.

President Anura Kumara Dissanayake says Colombo preparing to safely evacuate 208 personnel stranded on Iranian ship IRIS Bushehr - Anadolu Ajansı

Sri Lanka on Wednesday said it had recovered over 80 bodies of Iranian sailors killed after a US submarine attack sank the Iranian frigate - IRIS Dena - off Galle, the island's southern coastal town.

A U.S. submarine sank an Iranian warship in the Indian Ocean, as Washington and Israel intensified their bombardment Wednesday of Iran's security forces and other symbols of power.

Since 1991, Navy subs have launched scores of cruise missiles in combat, but the torpedo attack off Sri Lanka is a return to form after 80 years.

Beijing is working to ramp up production of nuclear-powered attack boats and incorporate larger numbers of guided-missile classes into its submarine force, putting the People’s Liberation Army Navy on the path to credibly challenge U.

Tensions in the Persian Gulf have risen sharply. Iranian forces have blocked 38 Indian commercial vessels from continuing their journey. Iran has accused India of helping the United States locate and destroy a major Iranian naval ship.