I’m not so much concerned about the darkening of Ukraine as you put it. The darkening of France and the UK is a direct result of not having Poles and Belorussians and Ukrainians migrate to the west, as they have always done so through history. On balance it would be good to have both Ukraine and Russia allied to the European peninsular instead of in opposition.
The US USSR rivalry completely fucked up the white population worldwide. The USSR and US for example ensured the demise of the Afrikaner and the rise of the US nigger. It ensured that France became Arabized instead of Polonized. Stuff like that.