Foreign relations -- National security -- 13 Foreign economic relations -- 12 Politics and government -- 11 History -- 8 Congresses -- 6 Relations -- 5 more ... Congresses 4 Foreign relations 3 History 3 North Atlantic Treaty Organization 3 World politics -- 3 Defenses -- 2 Economic conditions -- 2 Economic integration 2 European economic community -- 2 International relations 2 Islam 2 Islam -- 2 Military assistance, American -- 2 Policy networks -- 2 Regionalism -- 2 Security, International 2 Strategic aspects 2 21st century 1 Allied occupation -- 1 Arab-Israeli conflict 1 Armed Forces 1 Arms control -- 1 Christianity 1 less ...