The meeting was the first time since Russia's full-scale invasion of Ukraine that Russian and American delegations are known to have met face-to-face.

Russia on Tuesday demanded NATO scrap its 2008 promise to one day give Ukraine membership of the U.S.-led NATO military alliance and dismissed the idea that NATO member forces could be keepers of the peace under some sort of ceasefire deal.

Russia on Tuesday opposed the presence of troops from North Atlantic Treaty Organization, NATO countries in Ukraine. Russian Foreign Minister Sergey Lavrov dismissed the idea that NATO member forces could act as peacekeepers under any ceasefire agreement,