The Revista Mexicana de Política Exterior is committed, now more than ever, to the task of presenting texts that serve for reflection, debate and analysis, all of them vital in our space and time. The collaborations published in the "Essays" section of this issue are located within important political and economic topics. They are materials that study and propose solutions for relevant issues of international relations in Mexico. In the "Notes and reports" section, two diplomatic notes presented by the Embassy of Mexico in Washington on trade and drug trafficking issues are published. Details regarding Central America and Mexico's participation in the world can be found in "Statements and Documents" where, among other materials, statements by the foreign ministers of the Contadora and Support groups, speeches by the Secretary of Foreign Affairs and those of the Executive Branch. These brief lines serve to once again reiterate the invitation to observe the events that are shaping the world scene on a daily basis. At the service of international information and analysis, this publication expresses, as always, its will to pursue its part in this task with determination.