Nulla poena sine lege

Mali

Mali - Constitution (EN) 1992

Title I The Rights and Duties of Human Dignity

Article 11:
That which is not forbidden by law cannot be made a crime, and one may only be constrained for what the law does not permit .

Rome Statute

Article 23 Nulla poena sine lege

A person convicted by the Court may be punished only in accordance with this Statute.