<p>This article intends to give an explanation of the events that favored the signing of the Treaty of Peace and Friendship between Argentina and Chile according the theory of conflict transformation, from the perspective given by the subdisciplinar field of Latin American history of international relations. To do this, we have divided this article into the following parts: first, we will make a historical tour about the genesis and evolution of the Beagle conflict throughout the twentieth century, including the arbitration of His Majesty, the rejection of the award by the Militrary Government of Argentina and the subsequent mediation of His Holiness Pope John Paul II. Second, we develop the main existing issues in the Treaty of 1984, as was a catalyst for the renewal of international relations between the two countries and the beginning of a process of integration and friendship can be understood in the light of the Kantian culture. Third, we introduce you to some explanatory notions of the theory of conflict transformation and present an overview of the most important events and developments of bilateral relations between Argentina and Chile we frame in that theory. Finally, we will present our preliminary conclusions in order to foster the debate and scientific exchange on this issue.</p>