National security Prevention 598 Terrorism 469 Government policy 412 Law and legislation 277 Evaluation 243 Foreign relations 242 more ... Appropriations and expenditures 223 Security measures 222 Military policy 206 Intelligence service 201 Management 192 Finance 185 Rules and practice 164 Armed Forces 143 Planning 129 Emergency management 119 International cooperation 105 Defenses 104 Politics and government 92 Security, International 92 Operational readiness 78 Strategic aspects 77 Technological innovations 77 Interagency coordination 73 Forecasting 67 Nuclear weapons 65 Cyberterrorism 62 Civil defense 61 Visas 61 less ...