Defense Secretary Pete Hegseth calls Iranian warship sinking a message that 'gloves are off' as U.S. nuclear submarine ...

A U.S. Navy fast attack submarine sank an Iranian warship in the Indian Ocean ...

The Iranian Navy sought refuge in Sri Lanka and India. While India obliged, Sri Lanka stalled over fears it would threaten its neutrality.

A U.S. submarine sank the Iranian frigate IRIS Dena off the coast of Sri Lanka on March 4, 2026, killing 87 people in what amounts to the first American torpedo attack on an enemy warship since World ...

This story has been updated with additional information from U.S. Central Command about the sinking of an IRGCN corvette. An ...

The downing of the Iranian frigate IRIS Dena marks the first time an American submarine has destroyed an enemy warship in decades.

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.

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.

After a U.S. submarine sank Iran’s IRIS Dena with a Mk 48 torpedo, attention turned to the Navy’s primary undersea weapon ...

The U.S. sank an Iranian warship in international waters, Defense Secretary Pete Hegseth said Wednesday, as it intensified ...

A sailor of the Iranian Navy warship IRIS Dena had phoned his father minutes before the frigate was struck by a torpedo, ...

War Secretary Pete Hegseth announced that a U.S. submarine torpedo strike sank an Iranian warship in a first enemy ship ...