Bilateral relations between states which are parties to a multilateral treaty may not be governed by that treaty. This may depend on an agreement between the two states concerned, which could subject their bilateral relations to a different regime that is considered to suit their specific needs better. The exclusion of bilateral relations under the multilateral treaty may also be the consequence of a unilateral expression of the will of one of these states, for instance in view of its non-recognition of the other state. The present article seeks to examine the conditions under which bilateral relations may be excluded on the basis of the unilateral determination of one of the states concerned.
