This book explores the question of how the multiplication of judicial decisions on international law has influenced the way in which legal findings in international law adjudication are justified. International law practitioners frequently cite judicial decisions to persuade. Courts interpreting international law are no exception to this practice. However, judicial decisions do much more than persuading: they enable and constrain interpretive discretion. Instead of taking the road of the sources of international law, this book turns to the somewhat uncharted terrain of legal argumentation....