The Bolsheviks tried to end the centuries-long rivalry between Russia and Turkey, and in 1921, Joseph Stalin formally transferred the Armenian-populated highlands of Karabakh to Soviet Azerbaijan to try to placate Turkey, though the majority of Zangezur remained within Soviet Armenia. In December 1920 under Soviet pressure central authorities issued a statement that Karabakh, Zangezur and Nakhjivan were all transferred to Armenian control. Stalin (then commissar for nationalities) made the decision public on 2 December, but the Azerbaijani leader Narimanov later denied the transfer.