US Submarine Torpedoes Iranian Warship in Indian Ocean Following Naval Exercises Hosted by India
In a dramatic escalation of military tensions, an Iranian warship, the IRIS Dena, has been sunk by a United States Navy submarine in international waters off the coast of Sri Lanka. The vessel had just completed participation in naval exercises hosted by India, marking a significant expansion of the ongoing US-Israeli conflict with Iran into the strategically vital Indian Ocean region.
Details of the Sinking and Rescue Operation
The incident occurred shortly after the IRIS Dena departed from the International Fleet Review and multilateral naval exercise MILAN 2026, organized by the Indian navy in Visakhapatnam from February 15 to February 25. According to official reports, the Sri Lankan navy responded to a distress signal from the Iranian frigate but arrived to find only oil patches and sailors adrift in the water, with no trace of the vessel itself.
Rescue efforts recovered 87 bodies and saved 32 Iranian sailors, who were transported to a hospital in Galle, Sri Lanka. This represents one of the rare instances since the Second World War where a submarine has torpedoed and sunk another vessel, highlighting the severity of the confrontation.
Political and Diplomatic Fallout
The sinking has ignited intense debate within India regarding maritime security in the Indian Ocean, where the nation maintains a substantial naval presence to protect crucial sea lanes for global trade and energy shipments. New Delhi confirmed the warship's involvement in its exercises before it headed home, but the Indian government has not yet issued any public statement on the incident.
U.S. Defense Secretary Pete Hegseth described the IRIS Dena as a "prize ship" and stated that the sinking illustrates how the U.S.-Israeli military operation against Iran is stretching beyond traditional borders. U.S. President Donald Trump has previously emphasized that one key objective of the conflict is to eliminate Iran's naval capabilities.
International Reactions and Accusations
Iranian Foreign Minister Abbas Araghchi accused the U.S. Navy of committing "an atrocity at sea" and warned on social media that the United States "will come to bitterly regret" the attack. He stressed that the frigate had been "a guest" of India's navy, adding a layer of diplomatic complexity to the incident.
In India, opposition leaders have criticized Prime Minister Narendra Modi's government for its silence. Rahul Gandhi of the Indian National Congress party wrote on X that "the conflict has reached our backyard, with an Iranian warship sunk in the Indian Ocean. Yet the Prime Minister has said nothing."
Broader Implications for Regional Security
Kanwal Sibal, a former Indian foreign secretary, noted that while India is "far from politically or militarily responsible for the U.S. attack," its "responsibility is at a moral and human plane." He added that "the U.S. has ignored India's sensitivities. The ship was in these waters because of India's invitation."
The incident underscores the delicate balance India has traditionally sought to maintain in tensions between the U.S. and Iran, emphasizing diplomacy and dialogue. With 74 countries participating in the MILAN 2026 exercises, the sinking raises questions about the safety and security of international naval engagements in contested waters.
A video released by the U.S. Department of Defense on X shows the moment of the torpedo attack, with the Iranian ship appearing to break apart after an underwater explosion, sending a large plume of water into the air. As regional powers assess the fallout, the sinking of the IRIS Dena marks a pivotal moment in the widening geographical scope of the US-Iran conflict, with significant ramifications for maritime policy and international relations in the Indian Ocean.
