Defence Minister Rajnath Singh is undertaking a three-day visit to Sri Lanka, marking a significant high-level defence engagement under India's Neighbourhood First policy. The visit focuses on deepening bilateral defence cooperation, reviewing existing defence agreements, and strengthening maritime security ties between the two nations. Sri Lanka, located at a strategic chokepoint in the Indian Ocean, remains central to India's security calculus in the Indo-Pacific region, especially amid growing Chinese naval presence in the Indian Ocean littoral.

India's relationship with Sri Lanka is anchored in geography, history, and strategic interest. Sri Lanka sits astride the major sea lanes of the Indian Ocean — specifically the Gulf of Mannar and Palk Strait — making it one of India's most consequential neighbours under the Neighbourhood First Policy articulated during the Modi government's tenure.

Defence diplomacy with Sri Lanka operates across several frameworks. The two countries conduct joint military exercises — Mitra Shakti (Army) and SLINEX (Navy) — and India has extended defence Lines of Credit to Sri Lanka for patrol vessels and other equipment. India also provided a Dornier maritime reconnaissance aircraft to the Sri Lanka Air Force.

The visit is significant because Sri Lanka's 2022 economic crisis created an opening for deepening Indian engagement. India extended over $4 billion in assistance during the crisis through currency swaps, credit lines, and deferred payments to the Asian Clearing Union — its largest-ever assistance to a neighbouring country. This financial leverage has translated into stronger strategic alignment, with Sri Lanka reaffirming its India-first security posture.

China's BRI investments in Hambantota Port (99-year lease) and Colombo Port City have made the India-Sri Lanka defence relationship particularly exam-relevant. UPSC has consistently tested India's Indian Ocean strategy, and this visit fits squarely into that narrative. The static hinterland includes BIMSTEC (Sri Lanka is a member), SAARC, and the India-Sri Lanka Free Trade Agreement (1998).