mediator, emissary, pointsman, ally, envoy, adversary, dialogue, negotiator, diplomat, functionary, antagonist, diplomacy, ambassador, modus vivendi, appeaser, conciliator, facilitator, peacemaker, statesman, ideologue, intermediary, sycophant, demarche, parleys, bilateralism, personage, suzerainty, inquisitor, confidante, mouthpiece, counterweight, rapprochement, disputant, flatterer, embassador, observer, hardliner, agent provocateur, guarantor, apologist, plenipotentiary, sparring partner, hegemon, interviewee, conspirator, sympathizer, stooge, protector, confessor, amanuensis, eunuch, technocrat, apparatchik, acolyte, arabist, circumlocution, interlocution, primus inter pares, compromiser, confederal, propagandist, egoist, controversialist, interviewer, conversationalist, factotum, bureaucrat, discussant, shuttle diplomacy, geostrategy, superpower, ceasefire, rhetorician, parliamentarian, confidant, kremlinologist, sidekick, meddler, sancho panza, intercessor, vassal, tormentor, arbiter, politician, prevaricator, protagonists, intriguer, articulator, suzerain, servitor, statecraft, betrayer, grand inquisitor, russophobe, entente, daladier, lackey, reformable, ironist, cold warrior, conduit, satrap, interlocutors, informant, addressee, eyewitness, addressees, protagonist, collaborator, participant, partner, employer, interrogator, overseer, recipient, author, competitor, customer, accuser, attacker

corner man, end man

minstrel

conversational partner, middleman