Bloomberg reported on 5 March that the sinking of the IRIS Dena has created direct political pressure on Prime Minister Narendra Modi. The frigate had participated in India's International Fleet Review and Exercise MILAN at Visakhapatnam just days before the war began — exercises where Indian and Iranian naval officers trained alongside personnel from dozens of other nations. The Dena was transiting home through waters India regards as its strategic sphere when a US submarine destroyed it with a torpedo 40 nautical miles from Sri Lankan waters — the first US torpedo kill of an enemy warship since 1945. Sri Lankan vessels rescued 32 critically wounded survivors; at least 80 crew were killed . The fate of approximately 100 others is unknown.
India has the world's fourth-largest navy and an explicit doctrine of Indian Ocean primacy, articulated in its 2015 maritime security strategy and operationalised through the Andaman and Nicobar Command, the Information Fusion Centre for the Indian Ocean Region, and bilateral maritime security agreements with littoral states from Mozambique to Indonesia. The doctrine's premise is that India is the Indian Ocean's resident power, and major military operations in these waters fall within India's sphere of strategic responsibility. A US submarine killing 80 crew members of a warship that exercised at Visakhapatnam — within helicopter range of Sri Lanka, where Indian naval vessels routinely patrol — tests that premise with a specificity no policy document anticipated.
The political geometry for Modi has no clean resolution. India imports roughly 85% of its crude oil, much of it through Gulf routes now under threat. India's relationship with Iran includes the Chabahar Port development — New Delhi's only access route to Afghanistan and Central Asia that bypasses Pakistan. India has simultaneously deepened defence ties with Washington through the Quad framework and a series of logistics, communications, and geospatial cooperation agreements signed since 2016. Condemning the sinking alienates the United States; endorsing it abandons the Indian Ocean doctrine and signals to every navy in the region that American submarines operate freely in waters India claims to secure. Silence — the current position — satisfies neither imperative.
India's predicament is a concentrated version of what this conflict is imposing on every non-aligned state. China has pressed Iran directly not to attack tankers and Qatari LNG infrastructure . Seven Gulf States have jointly reserved the right to respond to Iranian strikes . Qatar, which tried to maintain neutrality as a host of Al Udeid, has been pulled toward belligerency by Iranian strikes on its own soil . In each case, a war between the United States and Iran is forcing states that benefit from strategic ambiguity to abandon it. For India, the question is sharper than for most: if Indian Ocean primacy means anything operative, it means something when a warship that participated in your naval review is torpedoed in waters you claim to secure.
