Book excerpt: The Routledge Handbook of Asian Security Studies provides a detailed exploration of security dynamics in the three distinct subregions that comprise Asia, and also bridges the study of these regions by exploring the geopolitical links between each of them. The Handbook is divided into four geographical parts: Part I: Northeast Asia Part II: South Asia Part III: Southeast Asia Part IV: Cross-regional Issues This fully revised and updated second edition addresses the significant developments which have taken place in Asia since the first edition appeared in 2009. It examines these developments at both regional and national levels, including the conflict surrounding the South China Sea, the long-standing Sino-Indian border dispute, and Pakistan’s investment in tactical nuclear weapons, amongst many others. This book will be of great interest to students of Asian politics, security studies, war and conflict studies, foreign policy and international relations generally.