paragraph 3 in volume 1, chapter 1, Introduction
From 24 October 1945, the date of the entry into force of the Charter of the United Nations, to 18 April 1946, the date of the dissolution of the League of Nations and of the Permanent Court of International Justice, the two Courts were technically in existence side-by-side, although neither of them had any judicial business. The present Court has found in the simultaneous co-existence of the two Courts a factor relevant to its jurisdicti…