Sri Lanka, March 5 -- The US has carried out a submarine torpedo strike that sank an Iranian warship off the South coast of Sri Lanka, according to the US Defence Secretary Pete Hegseth.Sri Lanka travel

Hegseth confirmed that the US was behind the deadly strike on an Iranian frigate that was travelling close to the Sri Lankan coast.

Discover more Lake House Rest Investigative journalism workshops Business news analysis "An American submarine sunk an Iranian warship that thought it was safe in international waters," Hegseth said. "Instead, it was sunk by a torpedo."

The attack was carried out by a US Navy submarine late on Tuesday night. Hegseth said it was the first time since the second world war that an enemy vessel had been targeted...