LAW on the Implementation of the Statute of the International Criminal Court and the Prosecution of Crimes against International Law of War and Humanitarian Law
(1) unless otherwise decided by Government of the Republic of Croatia, the state authorities shall communicate with the International Criminal Court through the Government of the Republic of Croatia in the Croatian language or in one of the official languages of the International Criminal Court.
2. Requests for cooperation and any documents supporting the request shall either be in or be accompanied by a translation into an official language of the requested State or one of the working languages of the Court, in accordance with the choice made by that State upon ratification, acceptance, approval or accession. Subsequent changes to this choice shall be made in accordance with the Rules of Procedure and Evidence.