Foreign relations -- 27 National security -- 15 Foreign economic relations -- 11 History -- 9 Congresses -- 6 Islam -- 6 Politics and government -- 6 more ... Relations -- 6 Congresses 4 Muslims -- 4 Competition, International 3 Defenses 3 Economic integration 3 International cooperation 3 Military relations -- 3 North Atlantic Treaty Organization 3 Politics and government 3 Arms control -- 2 Case studies 2 Case studies. -- 2 Comparative government 2 Conflict of laws -- 2 Corporate culture -- 2 Economic aspects 2 Economic conditions -- 2 Entrepreneurship -- 2 German reunification question (1949-1990) 2 History 2 History, Military 2 History. -- 2 less ...