paragraph 282 in volume 3, chapter 18, The Representation of the Parties
The texts governing the working of the Court are silent concerning the qualifications required of counsel and advocates. This is a matter for each litigating State to settle for itself with due regard for the status of the Court, on a level with its own Supreme Court. To some extent the provisions about the official languages may restrict a party’s freedom of choice of counsel or advocates in oral proceedings, although…