Rules do not disappear suddenly. They wear out. Exceptions no longer surprise us. They become a habit. The international system does not collapse. It becomes disordered. In a world where violations of rules do not automatically entail costs and power becomes a key factor in behavior, the international order gradually loses its binding nature. This book explains how and why international normativity recedes – not always through spectacular ruptures, but through small, cumulative shifts. Using a historical perspective and contemporary examples, it analyzes the process through which rules stop functioning as boundaries and become mere rhetorical references.