This article analyzes the migration of the U.S. counterterrorism doctrine and its reception in the Inter-American legal system. For so doing, it inquires into (1) the emergence of the counterterrorism doctrine after 9/11 in the United States, and the influence it had in the creation and implementation of the (2) Inter-American Convention against Terrorism and the (3) Colombian Security doctrine Seguridad Democrática. This three-layered analysis provides a comprehensive account on how the (...)