Book excerpt: Located in the center of Asia with one of the largest land frontiers in the world and 14 neighbors whose dispositions could not easily be predicted, China has long been obsessed with security. In this handbook, an internationally renowned team of contributors provide a comprehensive and systematic analysis of contemporary thinking about Chinese national security. Chapters cover the PRC's historical, ideological and doctrinal heritage related to security, its security arrangements and policies targeting key regions and nations of the world, the security aspects of the PRC's ground, air, sea, space and cyber forces, as well as the changing and expanding definition and scope of China's security theory and practice.