In On the perpetual peace Kant develops, as if the drafting of a peace treaty was, its legal project to achieve a particular world political organization for each of the States that favors peace. It is a reflection on how politically men could avoid mutual confrontation, recognizing that peace is not consubstantial with their nature. A work that in its brevity brings together the highlights of Kantian philosophical thought and that, despite the time that has elapsed, does not fail to raise valid and substantiated solutions to the eternal problem of war.