Nulla poena sine lege

Rwanda

The Constitution of the Republic of Rwanda 2003 (2015)

Title II. FUNDAMENTAL HUMAN RIGHTS AND THE RIGHTS AND DUTIES OF THE CITIZEN

Chapter 1. FUNDAMENTAL HUMAN RIGHTS

Article: 20

Neither shall any person be punished with a penalty which is heavier than the one that was applicable under the law at the time when the offence was committed.

Rome Statute

Article 23 Nulla poena sine lege

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