Mexico's foreign policy constitutes one of the great national traditions, maintained even in the most difficult circumstances of its life as an independent country. Principles today so deeply incorporated into Mexican diplomacy, such as non-intervention, self-determination of peoples, and respect for human rights, formed an essential part of the political thought of the forerunners of this process. It was precisely these principles that would be strengthened throughout the painful effort to consolidate independence and the defense of its sovereignty against the multiple interventions that took place in the 19th century. In the face of these violent situations, Mexico has always granted the highest priority to the observance of its guiding principles, as well as the predominance of reason over force, political negotiation and compliance with the norms of International Law. With the three essays included in this issue of the Revista Mexicana de Política Exterior, we have tried to illustrate some aspects of this trajectory. Other transcendental aspects of Mexico's international agenda find treatment in the other sections that make up this issue. The appearance of the Secretary of Foreign Affairs before the Chamber of Senators stands out for its importance because it rescues and updates the best traditions of Mexican foreign policy.