2. There is in addition a principle to the effect that a special rule prevails over a general rule (หลักกฎหมายเฉพาะยกเว้น
กฎหมายทั่วไป ), so that, for example, treaty rules between states as Specific law would have priority as against general rules of treaty or customary law between the same states, although not if the general rule in question was one of compelling law. (Malcolm N Shaw, International Law, (6thedn. Cambridge University Press, Cambridge 2008.at p124)