Foreign relations -- 5 Commercial treaties 4 Congresses 4 Congresses -- 4 Free trade -- 3 Treaties 3 Arms control -- 2 more ... Commercial policy -- 2 International law 2 International trade 2 Law and legislation 2 Alliances 1 Armed forces -- 1 Collective Bargaining -- 1 Command and control systems 1 Commercial treaties -- 1 Customs unions -- 1 Defenses -- 1 Economic integration 1 Free trade - -- 1 German reunification question (1949-1990) 1 History 1 History -- 1 Implication of arms control treaties 1 Industrial relations -- 1 International economic integration 1 Military strategy -- 1 National security 1 National security -- 1 Neutrality 1 less ...