How possible is it to achieve a situation where "Old Russia" is populated by an urban Turkic culture, while the closes thing to an Eastern Slavic civilization lives mainly a horse nomad lifestyle. Obviously, the Turkic civilization will never be shed of its nomadic origins, and its possible that the *Russians will be one small tribe among many, but the important thing is for their identity to be firmly attached to the steppe life, and for the urban *Turks to similarly adopt the city lifestyle.
How would this happen?
What are some consequences beyond Eastern Europe/Central Asia?
How would this happen?
What are some consequences beyond Eastern Europe/Central Asia?