National security -- Foreign relations -- 13 Military policy 6 Terrorism -- 5 World politics -- 5 Military relations -- 4 Defenses 3 more ... Foreign relations 3 Politics and government -- 3 Prevention. -- 3 War on Terrorism, 2001-2009 3 North Atlantic Treaty Organization 2 Security measures 2 Security, International 2 1976- 1 Afghan War, 2001- -- 1 Air power -- 1 Civil defense 1 Civil defense -- 1 Courts -- 1 Decision making 1 Decision making. -- 1 Forecasting -- 1 Government policy -- 1 Harbors -- 1 History -- 1 History, Military -- 1 Information warfare -- 1 Intelligence service -- 1 Judicial review -- 1 less ...