All these ethnicities have been under the Russian influence for centuries. It's not like the multicultural cancer pushed on Europe and North America.
They have poly ethnic tensions too but overall they live much more harmoniously than us in the west.
Yep. It's mind-blowing actually how diverse Russia is. There's people out in Krasnodar Krai who for all intents and purposes are Mongol. Look Mongol (or classically "Turkic" if you will) who look absolutely nothing like the blue-eyed, white-skinned, blonde haired west Russians near St Petersburg or Moscow. Go east of Volgograd (Stalingrad to make it easier) and you'll see people that look like they could step out of a cab in downtown Baghdad or Tehran.
I always thought this was cool: https://external-preview.redd.it/aB9BInlAMSHkyQSIe1XPrf_YOffuNTnFEuFIGDS3b3Q.jpg?auto=webp&s=f97c7017dcc90441cb9291f27810cb28ebc3c5a3
(post is archived)