Defenses Civil defense -- 2 Military policy 2 National security -- 2 Armed Forces 1 Armed forces 1 Civil defense 1 more ... Disarmament 1 Disaster relief -- 1 Emergency management -- 1 Foreign relations -- 1 Harbors -- 1 Merchant marine -- 1 National security 1 Nuclear arms control 1 Politics and government -- 1 Prevention 1 Security measures 1 Security measures -- 1 Terrorism -- 1 War on Terrorism, 2001-2009 1 World politics -- 1 less ...