Book excerpt: This book explores global drug trafficking networks’ impact on international security and provides an in-depth analysis of drug trafficking networks globally by integrating international relations and security studies theories. The book acts as a primer, simplifying the complicated world of narcotics and insecurity, while also providing policy recommendations for policy-makers hoping to reduce the power of organized criminal and terrorist networks globally. It will be of interest to undergraduate and postgraduates taking courses in International Relations, Global Politics, Defense Studies, Security Studies, and International Political Economy, as well as Criminal Justice, Sociology, and other social science disciplines that cover issues related to drug trafficking, organized crime, and violence.