What are the elements of customary international law? Group of answer choices The recognition by the international community of the norms of customary international law and the agreement of the United Nations. The existence of opinion juris sive necessitatis (opinion that an act is necessary by rule of law) The general practice of states, and the acceptance by states that such practice is necessary by rule of law. The material element which is expressed in the practice of states, and the consistent implementation of the norms