Knowing with precision and depth the framework of the present decade to evaluate the possibilities and margins of action, is a fundamental imperative for countries that, like Mexico, are struggling to achieve a favorable insertion in that reality in the face of the 21st century. Such is the concern expressed in the articles in this issue of the Revista Mexicana de Política Exterior. This edition includes essays on the Pacific Rim, a very important topic for Mexico's foreign policy; the nature of the new détente in East-West relations; the homogenization of world society, political democratization, multipolarity and geopolitical displacement, and the current crisis of the world economy and the possible great depression that is expected.