US Submarine Sinks Iranian Frigate IRIS Dena Near Sri Lanka, Raising Regional Tensions

A US Navy submarine sank the Iranian frigate IRIS Dena in international waters off Sri Lanka, marking the first such torpedo attack by the US since World War II. The vessel, carrying nearly 130 sailors, was returning from India's MILAN 2026 naval exercise. Iran condemned the strike as an unprovoked 'atrocity at sea' and vowed retaliation, while the US described it as a legitimate military action. The incident has raised concerns about regional security, India's maritime role, and adherence to international law, with rescue efforts led by Sri Lanka and supported by India ongoing.