Book excerpt: In 'Governing Security After War', Louis-Alexandre Berg examines the political dilemmas around international efforts to restructure police and military forces in conflict-affected countries. Berg explains the success and failure of international peacebuilding and security assistance programs by focusing on the internal political dynamics facing leaders in these countries. Through a novel theoretical framework, statistical analysis of an original dataset, and in-depth case studies, Berg provides new insights into the role and impact of international involvement in countries affected by violent internal conflict.