This book sets out to break down and identify positive associations between Disarmament, Demobilization, and Reintegration (DDR) and Security Sector Reform (SSR). Drawing on case studies from selected post-conflict settings, the book demonstrates the potential and reality of improved collaboration between both endeavors. Enhanced cooperation could avoid negative outcomes, such as former combatants dropping out of programs, trust undermined in security institutions, and the creation of security vacuums that jeopardize the safety of individuals and communities. A central claim of the book is that programs must be responsive to the needs and interests of different national actors. Without understanding the dynamic political processes that shape the origins, parameters, and outcomes of both processes, DDR and SSR may address security deficits, but will be unfit to support sustainable transitions towards national recovery and development. (Series: Geneva Centre for the Democratic Control of Armed Forces [DCAF])