Quadripartite Activity: Failure to find a solution of the Berlin currency problem after the question had been considered by the United Nations Security Council was evident when the replies of the western powers and the Soviet Union to Dr. Juan Atilio Bramuglia's questions about the problem were made public on November 26, 1948. The Soviet reply stated that an agreement on the four-power control plan would mean the simultaneous lifting of the Berlin blockade and a return to four-power collaboration in the administration of Berlin, which in effect would mean resumption of direct conversations on the currency questions among the four military governors. The western powers made it clear that they considered the unity of Berlin city administration as the basic prerequisite for an agreement. Several days later, on November 30, a city government was installed in the Soviet sector of Berlin, with Friedrich Ebert as its mayor and on December 21, the western military governments announced formal reconstitution of the Allied Kommandatura on a three-power basis. In announcing the move, Brig. Gen. Jean Ganeval, French sector commandant, stated that fourparty administration of the city could be resumed any time that Soviet authorities decided to abide by agreements to which the four powers were committed.