Politics and government -- 44 Foreign relations -- 39 Economic integration 25 History -- 22 Foreign economic relations -- 16 National security -- 15 Relations -- 15 more ... Defenses 14 World politics -- 13 Military policy 11 History 10 Foreign relations 9 Security, International 9 Economic conditions -- 8 International agencies -- 7 Periodicals 7 Periodicals -- 7 Congresses 6 Economic conditions 6 Armed Forces 5 Congresses -- 5 Arms control -- 4 Economic integration -- 4 Economic policy 4 Islam -- 4 Regionalism -- 4 Social policy 4 Defenses -- 3 Ethnic relations 3 European economic community -- 3 less ...