Defenses History 193 Military policy 177 National security 144 Armed Forces 108 Foreign relations 103 Politics and government 92 more ... Fortification 53 Colonies 52 Economic aspects 34 World politics 34 Nuclear weapons 33 History, Military 32 Colonial forces 31 World War, 1939-1945 31 Security, International 28 Military relations 25 Appropriations and expenditures 23 Strategic aspects 22 Militia 20 Economic conditions 19 Arms control 17 Decision making 15 Military art and science 15 Disarmament 14 Economic policy 14 Military planning 14 Prevention 14 Terrorism 14 Cold War 13 less ...