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U.S. Submarine Sinks Iranian Frigate IRIS Dena Off Sri Lanka, Scores Dead

U.S. Submarine Sinks Iranian Frigate IRIS Dena Off Sri Lanka, Scores Dead
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An Iranian navy frigate was sunk off Sri Lanka’s southern coast on Wednesday after a U.S. submarine fired a torpedo in one of the most dramatic escalations yet in the widening war involving Iran, the United States and Israel, leaving scores of sailors dead or missing and only 32 rescued alive so far aljazeera +1. Sri Lanka’s navy said it had recovered 87 bodies from waters about 40 nautical miles (roughly 75 km) off Galle, while officials warned that around 140 people were still unaccounted for from the vessel’s estimated 180-strong crew rochesterfirst +1.

The ship, identified by Sri Lankan and regional officials as the IRIS Dena, a Moudge‑class frigate and one of Iran’s newer warships, had been returning from the 2026 International Fleet Review in India when it sent a distress call early Wednesday local time aljazeera +1. Rescue craft dispatched by Sri Lanka found oil slicks, life rafts and sailors floating in the water, but no intact hull, underscoring both the force of the blast and the difficulty of recovering definitive evidence about the final minutes of the ship rochesterfirst +1.

A Rare Torpedo Strike and Heavy Human Toll

U.S. Defense Secretary Pete Hegseth told reporters in Washington that “an American submarine sank an Iranian warship that thought it was safe in international waters,” confirming that a U.S. Navy submarine fired the torpedo that destroyed the Dena in the Indian Ocean aljazeera +1. U.S. officials cited by Reuters said the attack marked the first time since World War II that the U.S. military had sunk an enemy warship with a torpedo, a pointed demonstration of undersea power at long range nytimes +1.

Sri Lanka’s navy said its ships and aircraft pulled 32 “critically wounded” sailors from the water and rushed them to hospitals in Galle, while at least 87 bodies were recovered by mid‑day Wednesday, with the toll expected to rise as the search widened rochesterfirst +1. Initial casualty figures varied, with some Sri Lankan defense sources telling local and foreign media that “at least 101” remained missing and others warning that nearly 150 people could still be unaccounted for nytimes +1. Commander Buddhika Sampath, a navy spokesman, said rescuers encountered “only some oil patches and life rafts” when they arrived on scene, not the vessel itself, complicating early speculation over whether the ship had suffered a single torpedo hit or secondary explosions rochesterfirst +1.

Conflict Spreads Beyond the Middle East

The sinking came on the fifth day of a fast‑moving conflict in which U.S. and Israeli forces had already struck Iranian missile sites, naval bases and leadership targets, and Iran had launched missiles and drones toward Israel and, more recently, NATO‑protected airspace over Turkey theguardian +1. U.S. Central Command previously said it had destroyed multiple Iranian naval vessels closer to the Persian Gulf, but the strike near Sri Lanka extended the confrontation into the Indian Ocean, close to busy shipping lanes and within what India regards as its strategic backyard aljazeera +2.

Regional analysts said the attack risked drawing South Asian states more directly into the crisis. The Dena had just participated in multinational naval events hosted by India, and its destruction so close to Sri Lankan waters raised uncomfortable questions in New Delhi and Colombo about how far the conflict might intrude into their maritime zones france24 +1. Iranian diplomats in Colombo demanded explanations and travelled to Galle to speak with survivors, while Sri Lanka’s foreign minister stressed that his country’s role had been limited to search and rescue after a distress call, in line with international obligations aljazeera +1.

The Bigger Picture

The torpedoing of IRIS Dena underscored how quickly the Iran–U.S.–Israel war had jumped from missile salvos in the Gulf and Levant to lethal naval engagements in the wider Indian Ocean, placing neutral coastal states and global trade routes at new risk. With casualty figures still fluid, an Iranian response not yet fully articulated, and Washington touting the sinking as a landmark show of force, the episode signaled that containment of the conflict to the Middle East had effectively failed, leaving Asian governments and maritime powers to reassess both their neutrality and their exposure.

aljazeera Al Jazeera; rochesterfirst AP News; nytimes Reuters; france24 BBC; wnct Sri Lanka navy statements via AP/Reuters; bbc Pentagon briefing reports; apnews NYT; nypost Gulf News/BBC; theguardian DW; reuters NYT live coverage; timesofisrael India Today; ynetnews Tribune India.