Book excerpt: This book critically examines the security-development nexus through an analysis of organised crime responses in post-conflict states. As the trend has evolved, the security-development nexus has received significant attention from policymakers as a new means to address security threats. Integrating the traditionally separate areas of security and development, the nexus has been promoted as a new strategy to achieve a comprehensive, people-centred approach. Despite the enthusiasm behind the security-development nexus, it has received significant criticism. This book investigates four tensions that influence the integration of security and development to understand why it has failed to live up to expectations. The book compares two case studies of internationally driven initiatives to address organised crime as part of post-conflict reconstruction in Sierra Leone and Bosnia. Examination of the tensions reveals that actors addressing organised crime have attempted to move away from a security approach, resulting in incipient integration between security and development, but barriers remain. Rather than discarding the nexus, this book explores its unfulfilled potential. This book will be of much interest to students of war and conflict studies, development studies, criminology, security studies and IR in general.