paragraph 21 in volume 1, chapter 3, The Political and the Institutional Role of the Court
The Permanent Court of International Justice was established by the League of Nations on the basis of Article 14 of the League Covenant, itself Part I of the Peace Treaties of 1919. The Assembly of the League of Nations in its resolution of 13 December 1920 approving the draft Statute, instructed the Council to submit it to the members, and added that it would come into force as soon as the Protocol of Si…