 In August 1943, as the Germans began to fall back from Moscow, Ambassador W. Averell Harriman replaced Standley, and the full American diplomatic staff returned to Moscow, supplemented by many military staff helping to bring American military aid to the USSR.Spaso House became an office building, a dormitory for staff, and a hotel for important visitors.Spaso House guests included Presidential advisor Harry Hopkins, former Presidential candidate Wendell Willkie, Secretaries of State Cordell Hull and Edward Stettinius.