paragraph 168 in volume 2, chapter 10, Qualification to be a Party in a Case: Jurisdiction Ratione Personae
A State which is not a party to the Statute can participate in a case before the Court by virtue of Article 35, paragraph 2, of the Statute.1 According to this provision,
The conditions under which the Court shall be open to other States [that is, States which are not parties to the Statute] shall, subject to the special provisions contained in treaties in force, be laid down by the Security Council, but in no case shall …