sentences:  He followed with several postgraduate courses, including at the Higher Institute of International Relations in Havana in international relations and negotiation techniques; at the External Trade Institute of the Ministry of Foreign Trade in Havana, in foreign trade, and at the Economic Commission for Latin America and the Caribbean (CEPAL) and "Centro de Investigación y Docencia Económica" (CIDE) (Economic Research Centre) in Mexico City, in economic alternatives for Latin America.He speaks four languages