Rector of the United Nations University for Peace. Specialist in international relations, regional integration, the Latin American political system, theory and practice of international negotiation, and security and defence policy. He has been Secretary General of the Latin American Faculty of Social Sciences (FLACSO) between 2004 and 2012, and Director of FLASCO – Chile (1996-2004) Professor at the School of International Relations of the National University of Costa Rica (UNA) (1980-1990) Fullbright Professor at the Latin American and Caribbean Center (LACC) at Florida International University, Miami, USA. He is a member of the Board of Directors of Foreign Affairs in Spanish, Mexico; of the Advisory Board of the journal Pensamiento Iberoamericano, Spain and of the Editorial Committee of the journal Ciencia Política of the National University of Colombia.