The Rus'–Byzantine War of 941 took place during the reign of Igor of Kiev. The Khazar Correspondence reveals that the campaign was instigated by the Khazars, who wished revenge on the Byzantines after the persecutions of the Jews undertaken by Emperor Romanus I Lecapenus. The Byzantines thus managed to dispel the Rus' fleet but not to prevent the pagans from pillaging the hinterland of Constantinople, venturing as far south as Nicomedia. Many atrocities were reported: the Rus' were said to have crucified their victims and to have driven nails into their heads.