The Bay of Bengal: South Asia’s Emerging Frontier of Maritime Friction

• The Bay of Bengal occupies a central position at the receiving end of these cascading disruptions.
• Challenges, ranging from freedom of navigation to anti-access and area-denial capabilities, grey-zone naval deployment, and maritime domain awareness, now dominate the strategic talks of the states along the coast, putting significant pressure on consensus-driven diplomatic institutions.
• This rapid, competitive expansion of port infrastructure and operational bases transforms commercial trade nodes into permanent military outposts, heightening security dilemmas and locking the Bay into a cycle of structural militarisation.
• The convergence of global conflict spillovers, institutional vulnerabilities, subsea infrastructure exposure, and dual-use port infrastructure has made the Bay of Bengal a focal theatre of great-power rivalry.

The contemporary global security landscape is increasingly defined by the far-reaching spillover of distant geopolitical conflicts into vital maritime spaces, transforming previously quiet trade corridors into arenas of systemic risk. High-level strategic forums across South Asia have repeatedly alerted the international community to the growing danger that warfare in West Asia and Eurasia will not remain geographically contained. As weaponised disruptions, drone assaults, missile strikes, and state-sponsored grey-zone actions escalate across critical maritime chokepoints in the Red Sea, the Bab-el-Mandeb, the Persian Gulf, and the Black Sea, commercial shipping lines and naval task forces are being forced to alter their navigational realities. The Bay of Bengal occupies a central position at the receiver end of these cascading disruptions. Serving as the natural western gateway to the Malacca Strait, this vast body of water anchors the primary maritime arterial highway connecting the oil-rich Middle East with the industrial economies of East Asia. Roughly 80% of East Asia’s seaborne energy supply, alongside immense volumes of containerised raw materials and finished goods, moves directly across these waters. Consequently, any friction, blockade, or tactical escalation originating in the Middle East or Mediterranean rapidly radiates into the Indian Ocean, exposing the Bay of Bengal as a vulnerable strategic theatre where external instability directly threatens regional economic stability and maritime freedom.

The Bay of Bengal is particularly vulnerable due to its unique location as a geographic funnel. In this context, sea traffic is likely to concentrate along high-risk corridors as ships seek to divert conflict areas. This heavy concentration of traffic creates an ideal environment for asymmetric leverage, so that naval blockades and maritime interceptions can have maximum effect with minimum military costs. Moreover, the international economic crises caused by protracted conflicts in Europe and West Asia make it even more important for the regional powers to defend their narrow maritime frontiers. As a result, naval forces operate at a higher state of readiness, intelligence collection becomes more intense, and naval trade voyaging becomes subject to increased scrutiny. As the regional states react defensively to external shocks, the Bay turns into an overcrowded and tense maritime theatre where miscalculations, accidental clashes between naval vessels, and local incidents may lead to larger provocations.

Sub-Regional Maritime Architecture and Security Imperatives

The institutional framework responsible for the oversight of security and trade transitions in the Bay of Bengal is undergoing a severe stress test due to greater power rivalry advancing faster than established diplomacy and institutional structures. Given that historically, regional organisations such asthe  Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC) andthe  Indian Ocean Rim Association (IORA) aimed at stimulating intra-regional trade, economic growth, poverty reduction, and technical collaboration, today’s security context requires these frameworks to deal with pressures of hard security for which they were not properly equipped. Challenges, ranging from freedom of navigation to anti-access and area-denial capabilities, grey-zone naval deployment, and maritime domain awareness,s now dominate the strategic talks of the states along the coast, putting significant pressure on consensus-driven diplomatic institutions.

Maritime strategies of the countries on the Bay of Bengal coastline illustrate this shift through specific approaches to navy modernisation and achieving strategic independence. Overall, India has aligned its naval strategy with its Act East Policy, thus being able to take up the role of a major supplier of maritime security and positive maritime influence in the area. Its strategy consists of building a surveillance network, developing naval capabilities on the East Coast of India, and reinforcing the Andaman and Nicobar Islands’ command. At the same time, smaller countries within the Bay of Bengal area find themselves in a continuously complicated geopolitical reality. Bangladesh follows the policy of balanced diplomacy while focusing on the enhancement of its navy. Sri Lanka does not break its neutrality principle but has to deal with the ramifications of port construction projects financed by foreign states. It is essential to mention that Myanmar continues to experience conflicts inside the state, which add uncertainty to the situation. On top of this, there is no efficient and cohesive maritime security system that would ensure the security of essential maritime routes from unilateral actions of the countries and aggressive maritime positioning. 

Critical Subsea Infrastructure and the Silent Theatre of Conflict

In spite of the fact that military ship movements and maritime trade routes receive almost all of the attention from the media and diplomats, the depths of the Bay of Bengal are equally vulnerable, but far less noticeable point of consideration—this involves a complex system of submarine fibre-optic cables and recently developing underwater technologies. The submarine fibre-optic system is the contemporary backbone of digital communication throughout South and Southeast Asia, responsible for more than 95% of all international transfer, which ranges from financial operations to cloud computing processes and communication in commercial trade or in defence. The main pathways of submarine cables, such as the Bay of Bengal Gateway (BBG) or significant continental trans-oceanic main trunks are passed through narrow underwater passages in the Bay of Bengal where it is easy to destroy them. Modern hybrid and grey-zone methods of warfare provide convincing evidence that underwater facilities are the most valuable and imperceptible objects for state or non-state players willing to damage the economy without starting open conflicts.

The nature of subsea infrastructure inherently makes it prone to many possible vulnerabilities that cause many security concerns for coastal states. Cables that lie on the seabed are frequently subjected to various possible dangers, including common accidents such as illegal trawling or dragging anchors from commercial vessels. There can also be a threat coming from malicious intent, like sabotage or intelligence gathering. The present geopolitical context, characterised by hybrid warfare in international relations, makes sabotage or tapping of an underwater cable of great relevance since it can lead to new types of isolation of regional economies and marketplaces. In addition, the effects of tapping may also extend beyond communications. The increase in the use of underwater oil and gas extraction systems, underwater pipelines, and offshore renewable energy constructions leads to an overload of the seabed with real infrastructure. National and regional powers are achieving advanced technologies, such as autonomous underwater systems for reconnaissance or deep-sea sensor arrays in order to enhance their position in the competition for the seabed. 

Dual-Use Port Developments and Strategic Footprints

The geo-economic scenario of the Bay of Bengal has been radically transformed due to the boom in deep-sea ports and infrastructure development projects funded by superpowers. Key seaports—in particular, deep-sea ports in Kyaukphyu (Myanmar), Hambantota and Colombo (Sri Lanka), Chittagong and Matarbari (Bangladesh)—along with other ports clustered along the East Coast of India and the Andaman Islands—have immense investments devoted to them for the purpose of improving connectivity. Formally, these multi-billion-dollar projects are presented as infrastructure initiatives aimed at enabling trade between South Asia and the world by enhancing global supply chains, eliminating congestion caused by shipping operations, and boosting the local economy through industrial growth. At the same time, the design features of the ports and the depth capacity of facilities,s in combination with the strategic locations of the ports, ts make it possible to deploy them for military purposes.

The military consequences of such dual-use technologies raise serious strategic challenges throughout the region. Deep-water ports designed for the needs of bulky commercial shipping vessels could easily service heavy military ships, aircraft carriers, support ships, and submarines. Moreover, constructing the infrastructure like satellite surveillance systems, long-range radars, intel monitoring devices, and space for fuel storage allows foreign competitors to establish a permanent presence deep in the Indian Ocean. For example, Beijing’s investments in Myanmar’s Kyaukpyu port are directed at avoiding the Malacca Strait and allowing overland access to the Bay of Bengal from southwestern China through the establishment of a significant intelligence and naval presence. In reaction, India has taken active steps to strengthen its military presence and to widen its infrastructure in the Andaman and Nicobar region while pursuing maritime partnerships with neighbouring littoral states. This rapid, competitive expansion of port infrastructure and operational bases transforms commercial trade nodes into permanent military outposts, heightening security dilemmas and locking the Bay into a cycle of structural militarisation.

The Strategic Tug-of-War and Future Regional Dynamics

The convergence of global conflict spillovers, institutional vulnerabilities, subsea infrastructure exposure, and dual-use port infrastructure has made the Bay of Bengal a focal theatre of great-power rivalry. At the heart of this geopolitical competition is an intense tug-of-war between regional and extra-regional powers seeking to secure vital maritime choke points, protect commercial supply lines, and project strategic influence across the wider Indo-Pacific. India views the Bay of Bengal as its immediate security threshold and natural maritime backyard, driving New Delhi to consolidate its position as the preferred security partner for neighbouring states through joint naval exercises, bilateral defence assistance, and coordinated maritime domain surveillance. Conversely, China’s critical dependency on external energy supplies—often referred to as the “Malacca Dilemma”—has compelled Beijing to steadily expand its operational reach into the Bay. By cultivating deep economic, infrastructure, and defence ties with littoral states surrounding India, China aims to construct a resilient maritime and overland network that guarantees energy security while challenging traditional balances of power.

​This dynamic is further complicated by the active involvement of Western powers, including the United States, Japan, and European nations, who view the stability and open access of the Bay of Bengal as indispensable to maintaining a free, open, and rules-based Indo-Pacific region. As these external nations form minilateral partnerships and conduct high-capacity joint naval manoeuvres throughout the Indian Ocean, the Bay of Bengal is shifting from a historical commercial basin into a tightly contested maritime theatre. For smaller littoral nations situated along the Bay, this great-power friction presents a delicate balancing act. While these states eagerly seek external foreign direct investment to bridge massive domestic infrastructure gaps, they face constant diplomatic pressure to avoid being drawn into opposing military blocs. As global geopolitical fractures deepen, the Bay of Bengal stands at a critical historical junction: without proactive diplomatic mechanisms, robust subsea protections, and transparent regional security frameworks, this vital maritime expanse risks evolving from a space of shared economic prosperity into the world’s next explosive frontier of regional conflict.

References:

1. _{https://carnegieendowment.org/research/2023/06/mapping-the-indian-ocean-region}
2. _{https://cnaws.in/articles/india-and-the-bay-of-bengal-maritime-infrastructure-strategic-autonomy-and-regional-leadership}
3. _{https://www.orfonline.org/expert-speak/indian-ocean-chokepoints-is-china-still-vulnerable}
4. _{https://www.orfonline.org/research/maritime-security-in-the-bay-of-bengal-obstacles-and-opportunities}
5. _{https://www.researchgate.net/publication/400503295_Strategic_Importance_of_the_Indo-Pacific_and_the_Bay_of_Bengal_Navigating_Geopolitical_Challenges}
6. _{https://www.tbsnews.net/foreign-policy/bay-bengal-could-become-next-frontier-conflict-mj-akbar-1562546}

Hridbina Chatterjee

Hridbina Chatterjee is a final-year postgraduate student in International Relations at Jadavpur University, Kolkata. She has written for newspapers and think tanks, with interests in South Asian politics, India’s foreign policy, and the Indo-Pacific. Views expressed are the author’s own.