In this episode of India Ascends, a quiet but dangerous realignment is taking shape in South Asia, linking Islamabad, Dhaka, and Beijing. At the center of it all lies India's most vulnerable lifeline: the Siliguri Corridor, or the Chicken's Neck. As rhetoric rises and Chinese activity inches closer, New Delhi is responding by fortifying the corridor with deep underground rail infrastructure. This isn't just construction, it's strategic deterrence. NDTV's Gaurie Dwivedi decodes why India is hardening its narrowest link, and what's really at stake?