A new framework for South Asian subregional connectivity, binding Bangladesh, India, Bhutan, and Nepal (BBIN), is quietly advancing, decoupled from the strain in India-Bangladesh relations.
This framework is centered on two newly announced cross-border railway projects connecting India and Bhutan. The Indian government unveiled two cross-border railway lines on September 29th, announced by Railway Minister Ashwini Vaishnaw and Foreign Secretary Vikram Misri. The projects cover 89 kilometers and are estimated to cost around ₹4,000 crore. Kokrajhar (Assam, India) to Gelephu (Bhutan), Banarhat (West Bengal, India) to Samtse (Bhutan).
The lines are expected to be completed within the next three to four years, integrating landlocked Bhutan into the broader Indian railway network for the first time. This will facilitate trade, tourism, and people-to-people connectivity.
The rail links support Bhutan's flagship projects, including the Gelephu Mindfulness City (envisaged as an economic hub connecting South and Southeast Asia) and the industrial development of Samtse.
The new rail links will allow exports from Nepal and Bangladesh to use the Indian rail network for transit to Bhutan, and vice-versa, enhancing regional commerce.
Foreign Secretary Misri confirmed that India, Bhutan, Nepal, and Bangladesh already have an agreement to use connectivity under the BBIN road network framework, despite Bhutan's historical reservation due to environmental concerns over air pollution from vehicle movement. Bhutanese Prime Minister Dasho Tshering Tobgay recently visited Dhaka to pitch for linking the Special Economic Zone (SEZ) in Kurigram (Bangladesh) with Gelephu, using India for trade and transit.
India has also developed an integrated check post at Darranga (Assam) and the Jogighopha Inland Waterways Transport Terminal (Assam), which offers Bhutan access to the Bangladesh-India inland water route.
The sub-regional BBIN approach serves as a counter to Pakistan's 2014 veto of the SAARC Motor Vehicle Agreement (MVA).
The routes pass near the narrow Siliguri Corridor ("Chicken's Neck"), reinforcing India's strategic depth and logistical efficiency for faster civilian and defense movement in the geopolitically significant northeastern region.
The rail connectivity reinforces India's influence in South Asia and is seen as a move to counter China's assertiveness and its Belt and Road Initiative (BRI) infrastructure diplomacy in the region.
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