Askold and Dir
Soviet historiography, as represented by Boris Rybakov and Lev Gumilev, advanced Kiev as the residence of the khagan, assuming that Askold and Dir were the only khagans recorded by name. Mikhail Artamonov became an adherent of the theory that Kiev was the seat of the Rus' Khaganate, and continued to hold this view into the 1990s. Western historians, however, have generally argued against this theory. There is no evidence of a Norse presence in Kiev prior to the 10th century. Troublesome is the absence of hoards of coins which would prove that the Dnieper trade route – the backbone of later Kievan Rus' – was operating in the 9th century. Based on his examination of the archaeological evidence, Zuckerman concludes that Kiev originated as a fortress on the Khazar border with Levedia and that only after the Magyars departed for the west in 889 did the middle Dnieper region start to progress economically.