In This Chapter, I introduce the book and its distinguishing features, briefly presenting its starting points, driving questions and purposes, theoretical-philosophical position, and central arguments. Before an impressive number of academic publications dedicated to the interdisciplinary study of international law, international politics, and international relations in the last decades, I delimit the starting points of this book in relation to three sets of—interdisciplinary, counterdisciplinary, and alternative interdisciplinary—studies of International Law (IL) and International Relations (IR), and their different engagements with the politics of international law. I do so provoked by an estrangement that called me to rethink the world, and international studies, otherwise. Inspired by Jacques Derrida, I propose a deconstructionist, supplementary thinking of the politics of international law, overturning and displacing attention from politics and law toward the international and its uneasy relationship with the world. In so doing, I argue that one must insistently problematize and provincialize the modern international legal and ontopolitical formation(s), while insistently decolonizing and de-anchoring the world. Repositioning the book before a pluriversal and différant world of many worldsworldworld of many worlds, I propose to rethink the politics of international law and worldmakingpolitics of international lawthe politics of international law and worldmaking otherwise. I conclude this chapter presenting the outline of the book.