Politics and government -- 64 Foreign relations -- 61 Economic integration 54 Foreign economic relations -- 25 Relations -- 23 Defenses 21 National security -- 20 more ... Congresses 19 History -- 17 Foreign relations 16 Military policy 16 Congresses -- 15 Economic conditions 14 Economic policy 14 Politics and government 13 Economic conditions -- 12 Economic integration -- 12 Security, International 11 History 9 Islam -- 9 World politics -- 8 Arms control -- 7 European cooperation 7 Regionalism -- 7 Commerce -- 6 Economic policy -- 6 Emigration and immigration -- 6 Armed Forces 5 Ethnic relations 5 Foreign economic relations 5 less ...