Defenses National security -- 6 Military policy 5 Armed Forces 4 Civil defense -- 4 Armed forces 3 Terrorism -- 3 more ... World politics -- 3 Armed Forces -- 2 Emergency management -- 2 Military relations -- 2 Politics and government -- 2 Prevention -- 2 War on Terrorism, 2001-2009 2 Weapons of mass destruction 2 Appropriations and expenditures 1 Armed forces -- 1 Asymmetric warfare -- 1 Civil defense 1 Defenses -- 1 Disarmament 1 Disaster relief -- 1 Economic aspects 1 Foreign relations -- 1 Government policy -- 1 Harbors -- 1 Merchant marine -- 1 Military art and science 1 Military planning -- 1 Military readiness 1 less ...