All over the world, governments impose punishments on their citizens for transgressions of the criminal law. Consensus exists that this sanctioning should be in accordance with the principle of legality and the rule of law. However, governments around the world struggle with providing foreseeability and non-arbitrariness in their sentencing systems. This continuous struggle raises the question how - and to what extent - foreseeability and non-arbitrariness must be guaranteed. Not only in rela...