Constantine VIII
Shortly after Bagrat's ascension to the throne, Constantine VIII sent in an army to take over the key city-fortress of Artanuji (modern Ardanuç, Turkey) on behalf of the Georgian Bagratid prince Demetre, son of Gurgen of Klarjeti, who had been dispossessed by Bagrat IV's grandfather, Bagrat III, of his patrimonial fief at Artanuji early in the 1010s. Several Georgians nobles defected to the Byzantines, but Bagrat's loyal subjects put up a stubborn fight.