Este trabajo aborda el análisis del Sistema Político Internacional de post-Guerra Fría y del correspondiente sistema interamericano, como contextos importantes para realizar la investigación de las potencias regionales-mediadoras, en general, y de dos potencias regionales-mediadoras, en particular, como son los casos de Brasil y de México. En consecuencia, se construyen dos cuadros de posicionamiento estructural de los Estados, uno general (en el Sistema Político Internacional) y otro particular (en el Sistema Interamericano).
This paper is concerned with the analysis of the Post Cold- War International Political System and the corresponding Inter-American System, as important frameworks to carry out the research of regional mediating powers, in general, and of two regional mediating powers in particular, cases in point: Brazil and Mexico. Consequently, two pictures of the states structural positioning are constructed, a general one (in the International Political System) and an individual one (in the Inter-American System), which makes it possible for us to identify the regional mediating powers in the world and in America. This way, Brazil and Mexico are identified as States that exhibit important capabilities and play mediating roles among the world powers and the neighboring States.