Defenses 12 National security -- 11 Defenses -- 7 Economic aspects 6 Civil defense -- 4 Military policy 4 Terrorism -- 3 more ... World politics -- 3 Armed Forces 2 Armed Forces -- 2 Economic aspects -- 2 Emergency management -- 2 Military relations -- 2 Politics and government -- 2 Prevention -- 2 War on Terrorism, 2001-2009 2 Weapons of mass destruction 2 Armed forces 1 Armed forces -- 1 Arms control -- 1 Asymmetric warfare -- 1 Civil defense 1 Congresses 1 Congresses -- 1 Defense contracts -- 1 Disarmament -- 1 Disaster relief -- 1 Economic conditions -- 1 Economic convention -- 1 Foreign relations -- 1 less ...