Abstract EN:

This thesis is concerned with the analysis of the sole arbitrator's system in the framework of the international proceedings at law. The disputes at law which form the subject of those proceedings can oppose either some states between them, and others against some international organizations, or several states against a few private individuals, in the framework of their contractual relationships. He analysis of the sole arbitrator system is done through a thorough examination a great part of the status law delivered by that organ in the framework of international public law and mixed conflicts opposing some states to some private individuals. The first part is devoted to the analysis of the sole arbitrator place as a juridical proceeding of international conflicts. The second part is devoted to different fields where the sole arbitrators intervention raises up numerous controversies now. Another matter of controversy is the problem of internationalization of contractual relationships between states and private individuals. The sole abritrators role in these attempts of eviction of the state national law contracting from the knowing of concluded contracts between this one and foreign companies, otherwise the more general problem of the sole arbitrator's position of this kind of conflicts opposing more often the third world countries to the western companies.