Terrorism -- 7 Prevention. -- 6 National security -- 3 Politics and government -- 3 Foreign relations -- 2 Military policy 2 Air power -- 1 more ... Asymmetric warfare -- 1 Civil rights -- 1 Combatants and noncombatants (International Law) 1 Defenses 1 Detention of persons -- 1 Executive power -- 1 Foreign relations 1 Government policy -- 1 Information warfare -- 1 Intelligence service -- 1 Legal status, laws, etc -- 1 Nuclear weapons information -- 1 Planning. -- 1 Politics and government 1 Prevention -- 1 Security measures 1 Terrorists -- 1 War (International law) 1 War and emergency powers -- 1 War on Terrorism, 2001-2009 1 Weapons of mass destruction 1 less ...