The relation between Brazil and Argentina never had a real stage of enmity. This, if we consider, for example, the categorization that Alexander Wendt made in 1999, in his famous book Social Theory of International Politics[1]. There were no wars among the two countries; there are not any now. There is also no arms race or trying to see who has a stronger and capable military command; neither is there a competition to see who has an atomic bomb first. In fact, in this last point, both Nations cooperate in an active way, in relation with the nuclear energy. And they must continue in that sense. From one decade to the other the relations had passed from the constant economical exchange, concentrated in Mercosur, to more diverse aspects, now in debate in Unasur organization. The first, commercial, despite some turbulences, it is already a constant factor and mandatory -but yes, it need improvements-. It is not so present in this work. Mercosur as well Unasur, both, need more diplomacy, political improvement, and practical changes. But it is in Unasur where the innovations of the last decade are concentrated. And they must be there.
[1] Cambridge
University Press, 1999.
