The Colombo Security Conclave (CSC) originated as a trilateral national security adviser (NSA) dialogue among India, Sri Lanka, and Maldives, first convened in 2011 to coordinate maritime domain awareness in the central Indian Ocean. The mechanism lapsed after 2014 amid a downturn in India–Maldives relations under the Abdulla Yameen administration, then was revived in November 2020 with a virtual NSA-level meeting hosted from Colombo. The grouping derives no authority from a treaty; it is a consensual, India-supported minilateral whose legitimacy rests on the political will of participating governments and the operational coordination of their national security secretariats. Its institutional anchor is a permanent Secretariat established in Colombo, formally inaugurated in 2024, which gives the CSC a standing administrative presence distinct from ad hoc summitry.
Procedurally, the CSC operates on a layered architecture. At the apex are meetings of National Security Advisers (or their equivalents—Sri Lanka and Maldives use defence and security secretaries), which set strategic direction and approve the work programme. Below the NSA tier sit Deputy NSA-level meetings and a network of working groups organised around thematic pillars. Member states rotate hosting duties, and decisions are reached by consensus rather than by vote, with no provision for binding majority rule. The Secretariat, headed by a Director General, prepares the agenda, tracks implementation of agreed deliverables, maintains continuity between ministerial cycles, and serves as the point of contact for prospective observers and partners. This structure deliberately keeps the CSC lightweight—there is no charter-mandated standing military force, no common budget pool beyond secretariat costs, and no headquarters basing of foreign troops.
The substantive work is organised around five agreed pillars, consolidated at the conclave's deliberations through 2021–2022: maritime safety and security; countering terrorism and radicalisation; combating trafficking and transnational organised crime; cyber security and protection of critical infrastructure; and humanitarian assistance and disaster relief (HADR). Membership expanded from the original three when Mauritius joined as a full member in 2021, and Bangladesh and Seychelles were admitted as the fifth and sixth members at the conclave in 2023–2024. The grouping also created an observer category, under which states such as Seychelles initially participated before accession. India's National Security Council Secretariat provides much of the analytical and logistical backbone, reflecting New Delhi's framing of the Indian Ocean Region as its primary security neighbourhood.
Contemporary practice illustrates the cadence. The sixth NSA-level meeting was held in Mauritius in 2023, where the principals adopted a "Road Map" and endorsed the establishment of the Secretariat. The Secretariat was operationalised in Colombo in 2024 under a Sri Lankan director general, with India's then-NSA Ajit Doval and counterparts attending the inaugural events. Bangladesh's accession brought the Bay of Bengal littoral more squarely into the mechanism's remit, while Seychelles extended its reach toward the western Indian Ocean. Working-level activity has included joint table-top exercises, information-sharing protocols on white shipping, and coordination on illegal, unreported and unregulated (IUU) fishing—activities run through the respective coast guards, navies, and home ministries of Colombo, Malé, Port Louis, Dhaka, Victoria, and New Delhi.
The CSC must be distinguished from adjacent constructs. It is not the Quad (the India–US–Japan–Australia dialogue), which is broader in geographic scope, includes two extra-regional powers, and carries a more explicit balance-of-power orientation toward China. Nor is it the Indian Ocean Rim Association (IORA), a 23-member treaty-adjacent body focused on economic cooperation and confidence-building across the entire ocean basin. The CSC is also narrower than the Indian Ocean Naval Symposium (IONS), a navy-to-navy forum convened by the Indian Navy. The CSC's defining feature is its small membership of immediate South Asian and western Indian Ocean littorals, its NSA-led rather than navy-led or foreign-ministry-led channel, and its concentration on non-traditional security threats alongside maritime domain awareness.
Several controversies and edge cases shape the grouping's trajectory. China is widely read as the unstated strategic backdrop, given Beijing's port investments at Hambantota, Gwadar, and across the region, yet CSC documents avoid naming any state as an adversary—a deliberate ambiguity that lets smaller members hedge. The mechanism's fortunes track bilateral volatility: the 2014–2020 dormancy followed Malé's tilt toward Beijing, and the 2023 "India Out" campaign under President Mohamed Muizzu raised questions about Maldivian commitment, though Malé remained a member. The 2025 economic and political turbulence in Sri Lanka and Bangladesh tested the Secretariat's continuity. Critics also note that the CSC overlaps functionally with several regional bodies, raising questions of institutional duplication and the dilution of scarce bureaucratic capacity in small island states.
For the working practitioner, the CSC is significant as the principal India-anchored minilateral through which New Delhi institutionalises security cooperation with its immediate maritime neighbours without the visibility costs of a formal alliance. Desk officers covering South Asia, journalists tracking Indian Ocean geopolitics, and analysts mapping the contest for influence among India, China, and external powers should treat the CSC as a barometer of regional alignment: its expansion signals confidence in Indian leadership, while its periodic stalls signal the limits of that leadership when bilateral relations sour. The establishment of a standing Secretariat in 2024 marks a deliberate move from episodic dialogue toward durable institution—an evolution worth watching closely.
Example
In 2024 the Colombo Security Conclave inaugurated its permanent Secretariat in Colombo, with India's National Security Adviser Ajit Doval and counterparts from the six member states attending the launch.
Frequently asked questions
The CSC has six full members: India, Sri Lanka, Maldives, Mauritius, Bangladesh, and Seychelles. The original 2011 trilateral comprised India, Sri Lanka, and Maldives; Mauritius joined in 2021, followed by Bangladesh and Seychelles in 2023–2024.
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