The Principle of Nullum Crimen Sine Lege in the Construction of European Criminal Law

This paper investigates the role played by the rule of law in the construction of an EU criminal law. The analysis, also from a historical perspective, of the rule of law shows how it is tremendously flexible and adaptable to the changing socioinstitutional contexts in which it is considered. It is necessary to assess whether the process of Europeanization can be considered a “risk factor” for its stability or whether, on the contrary, it requires only simple adaptations that do not detract from its essence.