translate English to French: The notion of international instruments is far broader than that of treaties, since it includes the unilateral acts of international organizations and agreed instruments that are not treaties as well as treaties proper.
D'un côté, la notion d'instruments internationaux est plus vaste que celle de traités, puisqu'elle inclut des actes unilatéraux d'organisations internationales et des instruments concertés non conventionnels à côté des traités proprement dits.