The Revista Mexicana de Política Exterior dedicates this volume to the theoretical and practical study of Mexico's participation in different bilateral, subregional, and regional economic groups. Integration in Latin America and the Caribbean is a priority on Mexico's international agenda and, in this regard, the country has taken firm steps in 2004 towards Mexico's entry as an observer to the Central American Integration System (SICA) and the Southern Common Market (Mercosur). In addition, it highlights its participation in the negotiations of the Free Trade Area of the Americas (FTAA), the launch of the Puebla-Panama Plan (PPP) and pronounces itself in other multilateral forums that deal with political, economic and social issues of a regional nature.