Politics and government -- 4 Terrorism -- War on Terrorism, 2001-2009 Civil rights -- 2 Foreign relations -- 2 Government policy -- 2 Civil defense 1 more ... Civil defense -- 1 Combatants and noncombatants (International Law) 1 Defenses 1 Detention of persons -- 1 Executive power -- 1 Harbors -- 1 Legal status, laws, etc -- 1 Merchant marine -- 1 National security 1 National security -- 1 Prevention 1 Prevention -- 1 Prevention. -- 1 Security measures 1 Security measures -- 1 Terrorists -- 1 War (International law) 1 War and emergency powers -- 1 World politics -- 1 less ...