Amit Shah reviews Siliguri Corridor security, pushes for ‘triangular grid’

The Siliguri Corridor, often dubbed the 'Chicken's Neck,' is a narrow stretch of land measuring merely 22 to 60 kilometers in width that serves as the sole land bridge connecting India's eight northeastern states with the rest of the country. This geographical vulnerability has been a persistent strategic concern since Independence, especially after the 1962 Sino-Indian War highlighted the risks of a single chokepoint. The recent announcement by Union Home Minister Amit Shah regarding a 'triangular grid' of three new military garrisons at Dhubri (Assam), Kishanganj (Bihar), and Chopra (West Bengal) marks a significant escalation in India's border infrastructure and defence preparedness along the Line of Actual Control (LAC). Historically, the corridor's fragility stems from the Partition of 1947, which severed direct land access to the Northeast via East Pakistan (now Bangladesh), forcing all surface transport through this narrow West Bengal corridor. The 1962 war exposed this weakness when Chinese advances in the Northeast threatened to cut off the region entirely. Since then, successive governments have sought to mitigate this risk through projects like the Broad Gauge rail link, the Dhola-Sadiya Bridge (Bhupen Hazarika Setu), and the ongoing construction of the Sela Tunnel in Arunachal Pradesh. However, the current move represents a shift from mere connectivity enhancement to forward military posturing. The key stakeholders include the Ministry of Home Affairs (MHA), Ministry of Defence (MoD), the Indian Army's Eastern Command, the Border Roads Organisation (BRO), and the state governments of Assam, West Bengal, and Bihar. The MHA's leadership in this review — rather than the MoD alone — underscores the internal security dimension, as the corridor also faces challenges from illegal migration, smuggling, and insurgent movements. The involvement of Bihar (Kishanganj) is notable, extending the security grid beyond the traditional Northeast theatre into the Gangetic plains, reflecting a holistic approach to the 'Chicken's Neck' vulnerability. Constitutionally, this initiative draws on Article 355, which mandates the Union to protect every state against external aggression and internal disturbance, and Article 356 provisions for President's Rule if security collapses. The Armed Forces (Special Powers) Act (AFSPA), 1958, though not currently in force in these specific districts, provides the legal framework for military operations in 'disturbed areas' if required. The Border Area Development Programme (BADP) and the Vibrant Villages Programme (VVP) further complement this by addressing socio-economic drivers of instability in border regions. Economically, securing the corridor safeguards the movement of goods worth billions — including tea, oil, timber, and hydroelectric power — from the Northeast to national markets. Politically, it reinforces the integration of the Northeast, addressing long-standing alienation sentiments. Strategically, the triangular grid enables rapid troop deployment, overlapping surveillance arcs, and mutual reinforcement among garrisons, directly countering China's massive infrastructure buildup — including the Lhasa-Nyingchi railway, new airbases, and village clusters (Xiaokang villages) — across the LAC in Tibet. Looking ahead, this development signals a likely acceleration in the construction of the proposed 'Strategic Railway Line' from Missamari (Assam) to Tawang (Arunachal Pradesh), and further integration of the Northeast into the Act East Policy via the India-Myanmar-Thailand Trilateral Highway. For aspirants, this is not just a defence story — it is a convergence of geography, history, constitutional law, federalism, and great-power rivalry. The triangular grid is a physical manifestation of India's resolve to never again let 1962 repeat itself.