The Indian Ocean lit up in fire and panic as a US attack submarine torpedoed an Iranian warship that had only weeks ago been feted in Mumbai as “the Indian Navy’s guest,” sending shockwaves from New Delhi to Tehran.

Pentagon sources say the frigate was tracked shadowing commercial traffic south of India when it allegedly locked fire‑control radar onto a US destroyer escorting tankers. After repeated warnings were ignored, the submarine fired a heavyweight torpedo that detonated beneath the hull, snapping the ship in two and leaving sailors fighting for their lives in an oil‑slicked sea.

In Tehran, newly appointed Foreign Minister Abbas Araghchi delivered a furious first reaction, accusing Washington of “butchering a guest who had just left a friend’s house” and hinting that India must “clarify its role,” a comment already straining Delhi–Tehran ties. “This warship was welcomed in an Indian harbor, then hunted under Indian eyes,” he charged.

Iran’s Shia leadership is “seeing red,” state media declares, as mourning banners go up outside mosques and IRGC hardliners demand direct retaliation on US assets “from Hormuz to the Red Sea.” New Delhi, caught in the crossfire, insists the ship had departed its waters days earlier and calls for “maximum restraint.”

Analysts warn the symbolism is explosive: a vessel once showcased as a bridge between Iran and India now lies on the seabed, sunk by America—turning the Indian Ocean from corridor of commerce into the newest front line of a spiralling US–Iran confrontation.