Defenses National security -- 18 Military policy 12 Armed Forces 8 Foreign relations -- 5 Politics and government -- 5 World politics -- 5 more ... Armed forces 4 Foreign relations 4 Strategic aspects 4 Arms control -- 3 Civil defense -- 3 Security, International 3 Terrorism -- 3 Arms control 2 Defences 2 Defenses -- 2 Emergency management -- 2 History 2 Military relations -- 2 National Security 2 National security 2 Prevention -- 2 Southeast Asia -- 2 Weapons of mass destruction 2 Air power -- 1 Appropriations and expenditures 1 Armed Forces -- 1 Asymmetric warfare -- 1 Civil defense 1 less ...