New Delhi, June 29 -- India's eastern neighbourhood is entering a new strategic phase. Bangladesh's decision to deepen cooperation with China on the proposed Teesta River Comprehensive Management and Restoration Project (TRCMRP) is not merely about river dredging, embankments or flood control. It reflects the growing convergence of infrastructure, diplomacy and geopolitics in South Asia. Beijing's insistence that the project is a purely developmental initiative "free from third-party influence" may sound reassuring, but geography rarely permits such neat separation between economics and security. For India, whose strategically vital Siliguri Corridor lies close to the Teesta basin, the issue extends well beyond water management. It raises questions about regional influence, neighbourhood diplomacy and the changing balance of power in the Bay of Bengal region.

The Teesta has long been an unresolved issue between India and Bangladesh. Originating in the Himalayas, the river flows through the Indian state of Sikkim and northern West Bengal before entering Bangladesh, where it supports agriculture, fisheries and millions of livelihoods. A long-pending water-sharing agreement has remained stalled for over a decade, largely because of objections from West Bengal over concerns about water availability. In the absence of progress, Dhaka has naturally explored alternative partnerships to address riverbank erosion, flooding and irrigation needs. China, through its state-owned engineering firms and deep financial resources, has positioned itself as a willing partner. The extension of the memorandum between Bangladesh's Water Development Board and POWERCHINA, followed by Beijing's commitment to support a technical feasibility study, reflects a broader pattern seen across Asia and Africa: infrastructure financing becoming an instrument of strategic engagement. Similar Chinese-backed river and transport projects have emerged in Pakistan, Nepal, Laos and Cambodia, often creating long-term political and economic influence alongside physical infrastructure.

India's concerns cannot therefore be dismissed as paranoia. The Siliguri Corridor-popularly known as the Chicken's Neck-is barely 20 to 25 kilometres wide at its narrowest point and connects the country's eight northeastern states with the mainland. It carries highways, railway lines, oil pipelines, fibre-optic networks and military logistics, making it one of India's most sensitive strategic arteries. Any major foreign-backed infrastructure project in its immediate vicinity naturally attracts scrutiny. The concern is not that China will construct embankments or dredge river channels; rather, it is that sustained engineering presence, technical surveys, data collection and institutional partnerships may gradually create strategic leverage in a region that is already witnessing heightened geopolitical competition. China's expanding footprint through the Belt and Road Initiative, its investments in ports across the Indian Ocean and its growing defence ties with several South Asian nations have already altered the strategic landscape. The Teesta project therefore fits into a much larger regional puzzle.

Yet India must also acknowledge an uncomfortable reality. Bangladesh's engagement with China is partly the consequence of opportunities that New Delhi itself has left unfulfilled. Bilateral ties have reached unprecedented levels in trade, connectivity, power exchange and security cooperation over the past decade. India remains Bangladesh's largest neighbour, an important development partner and a critical market. However, delays in resolving the Teesta water-sharing agreement have generated frustration in Dhaka. Water is not merely a diplomatic issue for Bangladesh; it is an economic and humanitarian necessity. If India cannot deliver progress on bilateral river management, it becomes increasingly difficult to argue that Bangladesh should indefinitely postpone development projects simply because they involve another partner. Sovereign nations inevitably diversify their external relationships when existing partnerships fail to address pressing domestic priorities. This is precisely why Beijing's offer has found resonance. Infrastructure financing fills vacuums, and geopolitics often follows.

The challenge before India, therefore, is not to oppose every Chinese investment in its neighbourhood but to remain the region's most credible, reliable and responsive partner. That requires accelerating the Teesta water-sharing negotiations, expanding joint river basin management, investing in climate-resilient infrastructure, and offering competitive development partnerships that address Bangladesh's genuine needs. Equally important is sustaining the deep political trust painstakingly built over decades through security cooperation, connectivity initiatives and people-to-people ties. South Asia is entering an era where influence will increasingly be measured not only by military strength but also by the ability to deliver infrastructure, technology and development outcomes. The Teesta project should serve as a reminder that strategic space is rarely lost overnight; it gradually narrows whenever diplomacy slows, agreements remain unfinished and neighbours begin looking elsewhere. For India, the answer lies not in anxiety over China's presence alone, but in renewing its own commitment to neighbourhood-first engagement backed by timely delivery and enduring partnership.

Published by HT Digital Content Services with permission from Millennium Post.