Book excerpt: Peacebuilding Through Community-Based NGOs explores the contested but increasingly relevant role nongovernmental organizations (NGOs) play in processes aimed at bringing about international peace and security and in the invention of alternatives for resolving conflict. Through case studies of Partners In Health (Haiti), Women in Black (Serbia), and the Community Foundation for Northern Ireland highlight the range of ways these organizations are involved in post-conflict social reconstruction efforts and with whom and for what purposes they interact as they do so. The authors argue for analyses that take into account the rich mosaic that is the civil society sector rather than treating all of these entities with one broad brush. At once a celebration and a critique, this book provides guidance for those seeking to understand the complexities and potential of the civil society sector for facilitating social justice and transformation.