Sherpa
A sherpa is one of the mountain people of Nepal. By extension, the name can also apply to a guide or porter hired for climbing expeditions in the Himalayas.By extension, sherpa is the name given to the personal representatives of heads of state and government within the G8 process: the metaphor is that the "sherpa" prepares the way toward the "summit". One or more "sherpa meetings" are generally held in preparation for summits.