This study introduces a new dual framework for securitization, called ”dual securitization,” which regards securitization as a whole process that ends after the desecuritization of the given issue. The author examines this process in three phases: (1) definition, (2) construction, and (3) (in)securitization-in-action. Additionally, the dual securitization framework takes both bottom-up and top-down characteristics of the process of securitization into consideration and examines both macro-level decision-making processes and discursive efforts and micro-level security practices. The book looks at the FARC conflict in Colombia and the chapters of the study examine the contextual factors that facilitated the definition, construction and insecuritization-in-action phases of the dual securitization process.