The Indian Ocean has become the newest flashpoint of the US–Iran conflict after an American attack submarine torpedoed an Iranian warship carrying 180 people off the coast of Sri Lanka, leaving a vast debris field, burning oil slicks and dozens of sailors missing at sea.

Regional tracking centers registered a sudden loss of signal from the vessel shortly after dawn, followed by a powerful underwater shockwave picked up by hydrophones. Minutes later, emergency beacons and scattered distress calls crackled over open channels—then went silent.

According to US defense sources, the Iranian ship had been shadowing commercial traffic and allegedly locked fire‑control radar on a US destroyer escorting tankers through the busy lane. After repeated warnings were ignored, the submerged submarine was ordered to fire a single heavyweight torpedo, which detonated beneath the warship’s keel and ripped the hull apart.

Sri Lankan, Indian and Pakistani rescue crews are racing against fading daylight and roughening seas, pulling survivors from among life jackets, twisted metal and fuel‑coated wreckage. Tehran has branded the strike a “massacre in cold blood,” claiming the ship was on a routine patrol and accusing Washington of “piracy and state terrorism.”

In Washington, officials insist the attack was a defensive action, but analysts warn the political fallout could be far more explosive than the torpedo itself—transforming one violent encounter off Sri Lanka into the trigger for a wider, uncontrollable war at sea.