Rome Statute
Part 6: The Trial
Article
Art.
74
Requirements for the decision
1.
All the judges of the Trial Chamber shall be present at each stage of the trial and throughout their deliberations. The Presidency may, on a case-by-case basis, designate, as available, one or more alternate judges to be present at each stage of the trial and to replace a member of the Trial Chamber if that member is unable to continue attending.2.
The Trial Chamber’s decision shall be based on its evaluation of the evidence and the entire proceedings. The decision shall not exceed the facts and circumstances described in the charges and any amendments to the charges. The Court may base its decision only on evidence submitted and discussed before it at the trial.3.
The judges shall attempt to achieve unanimity in their decision, failing which the decision shall be taken by a majority of the judges.4.
The deliberations of the Trial Chamber shall remain secret.5.
The decision shall be in writing and shall contain a full and reasoned statement of the Trial Chamber’s findings on the evidence and conclusions. The Trial Chamber shall issue one decision. When there is no unanimity, the Trial Chamber’s decision shall contain the views of the majority and the minority. The decision or a summary thereof shall be delivered in open court.
Source:
Article 74 — Requirements for the decision, https://www.icc-cpi.int/Publications/Rome-Statute.pdf.