Who would receive Constantinople after an Allied victory?

What would Britain do with Constantinople given competing Russian and Greek interests?

Britain could promise Constantinople to Russia, offer it to Greece, or hold it pending a peace settlement, with a Russian award offering the greatest immediate support to Tsar Nicholas II.

Constantinople would be a powerful bargaining asset within the Allied coalition. Giving the city to Russia would deliver an immense prestige victory to Tsar Nicholas II and help stabilize his position. Greece would also want the city, creating a competing claim with deep historical and cultural resonance. Britain could temporarily hold it in trust and defer the final decision to the peace conference. In the immediate wartime balance, however, Russian participation mattered more to London than Greek displeasure. Territorial promises could be used to keep an ally fighting even when they planted the seeds of a later diplomatic dispute.