This Handbook is the first comprehensive analysis of all the national security challenges facing India. With contributions from leading and rising scholars from across the world, the essays cover a wide range of topics including the colonial legacy; India’s wars; strategic culture; nuclear security; and the role of space, cyber security, terrorism, insurgencies, intelligence, and civil–military relations; among others. It focuses on India’s external as well as internal security challenges, and traditional as well as non-traditional challenges to India’s national security, as also on the major theoretical approaches to India’s national security and on the relationship between national security and state-making.