www.kenyalaw.org The International Crimes Act, 2008 2. The working languages of the Court shall be English and French. The Rules of Procedure and Evidence shall determine the cases in which other official languages may be used as working languages. 3. At the request of any party to a proceeding or a State allowed to intervene in a proceeding, the Court shall authorize a language other than English or French to be used by such a party or State, provided that the Court considers such authorization to be adequately justified. Article 51 Rules of Procedure and Evidence 1. The Rules of Procedure and Evidence shall enter into force upon adoption by a two-thirds majority of the members of the Assembly of States Parties. 2. Amendments to the Rules of Procedure and Evidence may be proposed by: (a) Any State Party; (b) The judges acting by an absolute majority; or (c) The Prosecutor. Such amendments shall enter into force upon adoption by a two-thirds majority of the members of the Assembly of States Parties. 3. After the adoption of the Rules of Procedure and Evidence, in urgent cases where the Rules do not provide for a specific situation before the Court, the judges may, by a two-thirds majority, draw up provisional Rules to be applied until adopted, amended or rejected at the next ordinary or special session of the Assembly of States Parties. 4. The Rules of Procedure and Evidence, amendments thereto and any provisional Rule shall be consistent with this Statute. Amendments to the Rules of Procedure and Evidence as well as provisional Rules shall not be applied retroactively to the detriment of the person who is being investigated or prosecuted or who has been convicted. 5. In the event of conflict between the Statute and the Rules of Procedure and Evidence, the Statute shall prevail. Article 52 Regulations of the Court 1. The judges shall, in accordance with this Statute and the Rules of Procedure and Evidence, adopt, by an absolute majority, the Regulations of the Court necessary for its routine functioning. 137