Sri Lanka Intervenes as US-Iran Tensions Escalate in the Indian Ocean
Colombo, Sri Lanka – Sri Lanka has taken control of a second Iranian naval vessel, the Irins Bushehr, following the sinking of an Iranian warship, the Iris Dena, by a US submarine earlier this week. This series of events underscores the escalating tensions between the United States and Iran, with Sri Lanka finding itself strategically positioned – and attempting to maintain neutrality – in the midst of the widening conflict.
US Submarine Sinks Iranian Warship
On Wednesday, March 4, 2026, a US submarine torpedoed the Iris Dena approximately 44 nautical miles (81km) off Sri Lanka’s southern coast as reported by the BBC. The frigate was participating in the MILAN multilateral naval exercise in the Bay of Bengal when it was attacked. The sinking resulted in the confirmed deaths of at least 87 crew members, according to Sri Lankan authorities.
Iran Condemns the Attack
Iranian Foreign Minister Abbas Araghchi has vehemently condemned the sinking of the Iris Dena, labeling it “an atrocity at sea” and warning that the US will “bitterly regret” the attack as cited by the BBC. Initial reports indicated a crew of nearly 130 people were aboard the vessel.
Sri Lanka’s Response and Neutrality
The Irins Bushehr requested permission to dock at a Sri Lankan port on Wednesday, March 5, citing an engine malfunction. After hours of deliberation, Sri Lanka granted the vessel access to a north-eastern port. President Anura Kumara Dissanayake emphasized Sri Lanka’s commitment to neutrality and humanitarian values, stating the country would “never hesitate to protect humanity” according to the BBC. He further affirmed Sri Lanka’s adherence to international conventions and its dedication to safeguarding human life.
India’s Involvement
India launched a search-and-rescue mission following the attack on the Iris Dena and has also allowed another Iranian vessel, the IRIS Lavan, to dock in Kochi. Iran requested India to “take in” the amphibious ship on February 28, 2026, the same day Israel and the US initiated strikes within the Middle East, reportedly resulting in the death of Supreme Leader Ayatollah Ali Khamenei. The request was approved on March 1, and the IRIS Lavan docked in Kochi on March 4. All 183 crew members are currently being accommodated at naval facilities in the area.
The Indian Navy issued a statement confirming the launch of search-and-rescue operations after receiving a distress call from the IRIS Dena. Long-range maritime patrol aircraft and the sailing training ship INS Tarangini were deployed to aid in the rescue efforts, coordinating with Sri Lankan authorities and deploying the survey vessel INS Ikshak from Kochi.
Escalation of Middle East Conflict
The sinking of the Iris Dena marks a significant escalation in the broader Middle East conflict, extending the reach of the US-Israeli military operation against Iran beyond its borders. US Defence Secretary Pete Hegseth described the IRIS Dena as a “prize ship” and justified the action as a demonstration of the expanding scope of the operation as reported by the BBC.