Foreign relations -- Politics and government -- 7 Congresses 2 Congresses -- 2 Economic integration 2 Causes 1 Congresses. -- 1 more ... Defenses -- 1 Diplomacy 1 Foreign economic relations -- 1 German reunification question (1949-1990) 1 International law -- 1 International relations 1 National security -- 1 Security, International 1 World War, 1939-1945 -- 1 World politics -- 1 less ...