US Attack on Iranian Frigate IRIS Dena Near Sri Lanka: Maritime Law and Indian Ocean Security

Recently, a U.S. submarine torpedoed the Iranian frigate IRIS Dena near Sri Lanka in international waters, raising legal and security concerns in the Indian Ocean region.

About the U.S. Attack in the Indian Ocean Region

• Incident near Sri Lanka: A U.S. submarine attacked the Iranian warship IRIS Dena about 40 nautical miles off Galle, causing heavy casualties and sinking the vessel.
• Participation in Maritime Exercise: The Iranian frigate had earlier participated in the International Fleet Review 2026 and MILAN Naval Exercise hosted by Indian Navy at Visakhapatnam
• Expansion of West Asian Conflict: The attack extended the ongoing US–Israel–Iran conflict beyond West Asia into the Indian Ocean Region.
• Search and Rescue Response: The Sri Lanka Navy conducted rescue operations under the International Convention on Maritime Search and Rescue, saving several sailors.
  • The Indian Coast Guard is responsible for executing /Coordinating Search and Rescue (SAR) missions in the Indian Maritime Search and Rescue Region (ISRR).

Key Concerns Regarding the Attack in the Indian Ocean

• Escalation of Maritime Conflict: Military confrontation in international waters risks turning the Indian Ocean into an expanded theatre of global conflict.
• Legal Ambiguity under Maritime Law: The United Nations Convention on the Law of the Sea (UNCLOS) mainly governs peacetime maritime activities and does not clearly regulate naval warfare.
• Security Implications for India: The incident occurred near India’s maritime neighbourhood, raising concerns about naval security and sea lane safety.
• Risks to Global Shipping: Escalation of conflict threatens vital international sea routes used for energy transport and trade.

Check Out UPSC CSE Books

Visit PW Store

Way Forward

• Strengthening Maritime Governance: Countries should adhere to international maritime laws and norms to maintain stability in global waters.
• Diplomatic Conflict Resolution: International disputes should be resolved through dialogue and multilateral platforms rather than military escalation.
• Enhancing Regional Maritime Security: India and regional powers should strengthen cooperation in the Indian Ocean Region to ensure secure sea lanes.
• Clarifying Legal Framework for Naval Warfare: The global community should develop clearer legal guidelines on maritime warfare alongside UNCLOS provisions.

DOWNLOAD PDF