Terrorism 19 Prevention 8 Criminology, Penology & Juvenile Delinquency 5 National security 4 Violence 3 Civil defense 2 Law and legislation 2 Radicalism 2 War 2 Art et science militaires 1 Civil-military relations 1 Communication & Mass Media 1 Conflict 1 Couverture de presse 1 Crime 1 Crime prevention 1 Crisis intervention (Mental health services) 1 Crisis management 1 Dangerous Behavior 1 Defenses 1 Defensive (Military science) 1 Défensive (Science militaire) 1 Emergency management 1 Genocide 1 Government policy 1 Guerre 1 Hostage negotiations 1 Intelligence service 1 Internal security 1 International relations 1