This book seeks to understand the role of regions in the provision of security (and insecurity) practices across the globe. Specialists with expertise in the regions they examine present eight case studies and analyses of the Americas, Africa and the Middle East, South and East Asia, and Europe. Discussing both The State and people in the context of security, this book examines four categories; inter-state security, transnational criminal practices (the drugs trade, human trafficking migration), proliferation issues (both nuclear and non-nuclear), and issues of domestic/state collapse. The book uses an inclusive definition of security to include traditional and non-traditional conceptions, and incorporates the use of force and the threat of the use of force, as well as issues related to the integrity of peoples. The chapters weave theory and case studies to provide a rich description of a variety of regional governance forms; and, where applicable, the absence of them to move beyond regionalism to consider the key determining features of regional governance. Comparative Regional Security Governance will be of interest to students and scholars of international security, international relations and governance.