National security -- Foreign relations -- 21 Military policy 16 Foreign relations 7 Terrorism -- 7 Defenses 6 World politics -- 6 more ... Decision making 5 Politics and government -- 5 Security, International 5 Economic aspects 4 History -- 4 Relations -- 4 Defenses -- 3 History 3 Military relations -- 3 National security 3 Prevention -- 3 Prevention. -- 3 Armed Forces -- 2 Armed forces 2 Civil defense -- 2 Decision making -- 2 Government policy -- 2 International cooperation 2 Sea-power -- 2 Security measures 2 Air power -- 1 Alliances -- 1 Appropriations and expenditures 1 less ...