From a discussion in the comments threads:
mott69: Everyone in this discussion should agree that all blonde or red hair and blue eyes originates from Norse/Viking blood in the past. So, a lot of Russians, Slavs, Baltics and others have at least some Nordic blood, but not enough to change their racial sub-category. Wade in MO: I don’t agree. Do you have any proof? How do you know that it didn’t evolve in non-Nordic regions like Finland and North western Russia? Do blonde aborigines have viking blood? Also, how do you know that blonde hair developed after the region became Germanic? Are you saying that the pre-indo European population was not blonde? Also, non northern Europeans have been know tho have red hair. I remember reading an ancient Greek account of the Scythians that said that they typically had red hair.
Actually, red hair comes from Finland 9,000 years ago. From there it spread out to Scandinavia and apparently much of the rest of the world, including Pashtuns, etc.