emissaire
Emissaire (also emissary) is a person sent on a mission to convey messages, negotiate terms, or represent an organization, government, or individual. The term derives from medieval Latin emissarius and Old French emissaire, and in English and other languages it is closely related to the idea of a messenger or envoy.
In diplomacy and public affairs, an emissaire is typically a temporary or specially tasked figure rather than
Responsibilities of an emissaire generally include delivering messages, facilitating negotiations, gathering information, reporting back on developments,
Legal status and privileges associated with the position vary. In formal diplomacy, some emissaries can be