In contemporary times of transnational changes, the dynamics of national security has become more complex and complicated, particularly with the emergence of transnational threats of terrorism, global warming and globalisation. In this context, the book concentrates on various aspects of national security challenges, particularly with reference to India. The highlights of the book include: specific attention on Islamalisation, strategic partnerships and defence cooperation. It is an interesting study covering India`s relationship with its immediate and extended neighbours.