This chapter looks into the work of counterterrorism agencies. It also lists the key roles and responsibilities of military, intelligence, and criminal justice agencies alongside the policy frameworks that shape and structure counterterrorism interventions. The demands of political actors are supplied by counterterrorism strategies. Large-scale, multi-faceted government counterterrorism policies strive to manage the risk, stop support for terrorist motivations, and protect citizens and economic interests. Mapping the changes in the organization of counter-terrorism highlighted how issues of transparency, oversight, and accountability have become increasingly significant. The chapter then examines the ethical and practical dilemmas of counterterrorism that have to be navigated and negotiated.