As I mentioned elsewhere, Kievan Rus i the basis of Russian culture. There was no difference between the Russians and the Ukrainians - they were always one people, unified by the Russian Orthodox Church as well as a common language.
Don't you see how this obliterates the argument of the Ukrainian nationalists? You are actually arguing against them. When you reference the establishment of the Kievan Rus you are making Putin's argument for him - certainly that was the argument that Putin put forth toTucker Carlson.
My God, man, are you that blinded by your base Russophobia? Did they use some sort of MK Ultra program to make you so anti-Russian that you cannot see that you are arguing literally against the existence of a Ukrainian nation????