A US submarine has sunk an Iranian warship in the Indian Ocean, Defense Secretary Pete Hegseth said, marking the first such sinking of an enemy ship by a torpedo since World War II.
The operation reflects Washington's determination to destroy Tehran's navy and safeguard the flow of oil through the Persian Gulf.
The torpedoed Iranian ship sank off the coast of Sri Lanka, killing at least 87 people, local authorities said.
The US has also shot down an Iranian missile heading toward a key Turkish military base, further escalating the conflict.
The targeting of Turkey marks the crossing of another line in the rapidly expanding conflagration, with the North Atlantic Treaty Organization condemning the targeting of Turkey, a member of the military alliance.
Several thousand ships remain stuck inside and outside the Persian Gulf, trapping roughly a fifth of the oil and liquefied natural gas the world consumes each day.
The US has long stationed nuclear weapons at the Turkish base, and the incoming Iranian missile was first identified by a NATO radar station at a different Turkish base.
