National security -- 187 Foreign relations -- 81 Politics and government -- 68 Nationalism -- 56 Foreign relations 41 History -- 39 National security 38 more ... Politics and government 36 Military policy 34 World politics -- 32 Armed Forces 29 Security, International 28 History 27 Congresses 24 International relations 22 Congresses -- 20 Nationalism 17 Defenses 16 Ethnic relations 14 National state 14 Armed Forces -- 11 Human rights 11 Economic conditions 10 International cooperation 10 National characteristics, American 10 Terrorism -- 10 Case studies 9 Political aspects 9 Relations -- 9 International economic relations 8 less ...