Foreign relations -- History -- 4 Congresses 2 Congresses -- 2 Foreign economic relations -- 2 Boundaries -- 1 Drug control -- 1 more ... Drug traffic -- 1 Economic integration -- 1 Foreign relations 1 Free trade -- 1 Intelligence service -- 1 International relations 1 Investments, Foreign -- 1 Petroleum industry and trade -- 1 Political aspects 1 Politics and government -- 1 less ...