Georg Schwarzenberger’s oeuvre has remained significantly underexplored in the literature despite his as one of the most important thinkers in international relations and international law of the twentieth century. Ahead of their time, his works reveal a picture of law that transcends academic boundaries, challenging conventional portrayals of both realism and international law. Through a detailed examination of the works of this theorist, this paper offers an analysis of the fundamental aspects of his theory of international relations and international law. It explores the elements at the heart of Schwarzenberger’s theory of international relations, which, though examined infrequently, retain their relevance in today’s international society. Through this exploration of Schwarzenberger’s works, this paper argues that his theory of international relations provides a powerful commentary on the fundamental structure, nature, and problems of international law. It points to and reveals issues that have remained at the heart of international law until today, offering a sophisticated and self-conscious interrogation of the relationship between law, power, and politics.