For a phenomenologist, the question that has to be asked about peace is not primarily whether it can be defined as the tranquillity of order, a law of nature or an infinite task, as it were according to Augustine, Hobbes and Kant. It is rather a question of its phenomenality : how does peace appear to us, how does it get visible? In his attempt to answer this question, Waldenfels privileges the event of a peace agreement and proposes a reconstruction of its genealogy.