National security -- 217 Foreign relations -- 94 Politics and government -- 75 Nationalism -- 68 Foreign relations 47 History -- 45 Politics and government 45 more ... National security 44 Military policy 38 World politics -- 38 Security, International 37 Armed Forces 33 History 32 Congresses 28 International relations 25 Congresses -- 24 Nationalism 21 Defenses 18 National state 17 Ethnic relations 15 Terrorism -- 15 International cooperation 14 Human rights 13 Armed Forces -- 12 Economic conditions 11 National characteristics, American 11 Relations -- 11 Case studies 10 Political aspects 10 Prevention -- 10 less ...