The theory "Only individuals are the subjects of international law" is propounded by :

"Kelsen", applying his monist theory that international and municipal law form one legal order, held that only individuals are the real subjects of international law, the State being merely a technical legal construct through which the conduct of individuals is regulated. "Oppenheim" held the classical view that States alone are subjects, while "Starke" and "Fenwick" accept both States and individuals as subjects.