Although early findings have identified masculinity as potentially causal in the development of armed conflict, there is no detailed account of the role of masculinity in structuring the civil conflicts which emerged in the Global South after the Cold War. This book advances the claims of IR scholars that the social construction of masculinities is key to resolving the scourges of militarism, sexual violence and international insecurity. By bridging feminist scholarship on IR with the scholarship of masculinities, the author advances both bodies of scholarship through detailed case study analysis. This book will interest practitioners, academics and students of gender and security studies.