Another writer draws these distinctions: (a) a state connected by protectorship with another previously enjoyed autonomy; the vassal state did not; (b) the protected state retains its nationality and its internal administration; the vassal state acquires a distinct nationality; (c) the establishment of a protectorate modifies few of the institutions of the protectorate state except as to foreign relations; the establishment of a suzerainty changes the institutions of the vassal state; (d) the protected state exercises its internal sovereignty a peu pres pleinement; the vassal state remains subordinate in several respects; (e) while the protected state has the right to be assisted in case of war by the protecting state, but is not bound to defend the latter, the vassal state is bound to aid its suzerain (Tchomacoff, De la Souverainete, p. 53) See also Hachenburger, De la Nature juridique du protectorat.
