Which of the following is not a General Principle of International Law:

Under Article 38(1)(c) of the Statute of the International Court of Justice, general principles of law recognized by civilized nations include principles borrowed from municipal systems such as "Res Judicata", "Estoppel" and "Equity". "Special Circumstances" is not a general principle of law; it is a specific rule of maritime boundary delimitation under the 1958 Geneva Conventions and UNCLOS, which qualifies the equidistance method.