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

The submarine, which is currently docked at Pearl Harbor, is the fourth U.S. military vessel to be named after the Queen City.

Legal experts say a U.S. submarine’s deadly attack on an Iranian warship does not appear to have violated international or American military law

Legal experts conclude that the U.S. submarine's attack on the IRIS Dena likely complies with international law, though questions about rescue efforts persist.

US Secretary of Defense Pete Hegseth said Wednesday that a US submarine sank an Iranian warship in international waters after Sri Lanka’s Navy said it rescued more than two dozen people from an Iranian vessel that was sunk off its shoreline.

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.

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.