Military policy Foreign relations -- 51 National security -- 21 World politics -- 21 History -- 12 Armed Forces -- 11 Politics and government -- 10 more ... Military relations -- 9 Nuclear weapons -- 9 Armed forces 8 Intervention (International Law) 8 War on terrorism, 2001- 8 Appropriations and expenditures 7 Security, International 7 Terrorism -- 7 Defenses 6 Deterrence (Strategy) 5 Nuclear weapons 5 Arms control 4 Government policy -- 4 Imperialism 4 Nuclear warfare 4 Persian Gulf War, 1991 4 Philosophy 4 War on Terrorism, 2001-2009 4 Foreign relations 3 Influence 3 International cooperation 3 Iraq War, 2003- 3 Nuclear arms control 3 less ...