Nulla poena sine lege

Belgium

Belgium - Constitution EN 1831 (2014)

Title 2 On Belgians and Their Rights

Article 12

No one can be prosecuted except in the cases provided for by the law, and in the form prescribed by the law.

Title 2 Belgians and Their Rights

Article 14

No punishment can be introduced or administered except by virtue of the law..

Rome Statute

Article 23 Nulla poena sine lege

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