Is it really millennium old? Actually, nobody really knows. There are written documents covering about a thousand years of Russian history. Before that Western historical science has a sort of vacuum of facts describing what was going on there. For most Western historians it was a place populated by barbarians who were not worth any attention. Something like a big white spot on a map with an inscription, "Here the dragons live." The facts about the territory of Russia before the X century are vague and sometimes even more mysterious than a complete the absence of the facts would be.