Ajit Doval reshaped India’s regional security outlook at the fifth BIMSTEC National Security Chiefs’ Meeting in New Delhi, bringing together Bangladesh, Bhutan, India, Myanmar, Nepal, Sri Lanka and Thailand. The forum, traditionally focused on trade and connectivity, is now being leveraged to counter escalating maritime risks and trans‑national terrorism in the Bay of Bengal.

Unpacking the 4D Doctrine

Doval’s celebrated “4D” framework—Deterrence, Diplomacy, Development, and Defense—has been woven into the BIMSTEC agenda. While development and diplomacy drive economic integration and technology exchange, deterrence and defense manifest through India’s “MAHASAGAR” (Mutual and Holistic Advancement for Security and Growth Across Regions) maritime blueprint, which calls for stronger naval patrols and joint exercises.

Maritime Security Takes Center Stage

With global shipping lanes facing heightened uncertainty, Doval urged member states to reinforce sea‑based cooperation, streamline port security protocols, and build supply‑chain resilience. BIMSTEC adopted a set of maritime security guidelines aimed at rapid information exchange, coordinated anti‑piracy patrols, and joint response mechanisms to protect the strategic Bay of Bengal corridor.

Bilateral Dialogues Amplify Multilateral Goals

Prior to the plenary, Doval held separate talks with delegations from Myanmar, Bangladesh, Sri Lanka and Thailand. In the Myanmar meeting, he warned that anti‑India insurgent groups—such as NSCN (Khaplang), ULFA and the Kamtapur Liberation Organisation—must be neutralised, highlighting the cross‑border dimension of India’s Northeast insurgency problem.

From Soft Balancing to Limited Hard Balancing

A recent Observer Research Foundation study notes India’s shift from “soft balancing,” where dialogue was the primary tool, toward “limited hard balancing,” which retains diplomatic engagement but keeps calibrated military options on the table. The 2020 Galwan clash and the 2025 Pahalgam attack illustrate this evolution: India combined troop deployments with diplomatic pressure and, when necessary, launched pre‑emptive strikes such as Operation Sindoor.

Doval’s approach to China, often described as the “4D doctrine,” stresses deterrence through enhanced naval presence, diplomatic outreach to de‑escalate tensions, development projects that create economic interdependence, and a defense posture ready to respond decisively. By embedding these pillars within BIMSTEC, India positions itself as a credible security partner, capable of shaping a collective response to regional threats.

The long‑term implication is clear: a more integrated BIMSTEC, anchored by India’s strategic vision, could become the cornerstone of South‑East Asian stability, offering a counterweight to great‑power competition and ensuring that the Bay of Bengal remains a conduit for peace rather than conflict.