This thread is educational if taken only as an anthropological issue, not to spread racism.
In fact, White Europeans (race, not skin colour) have a mixture of Asian Monglolic races. And even before that, Europe was inhabitted long before IndoGermanians arrived. So we are all a mixture. (Just remember the astronomic Monuments in England since the stoneage!!!)
When I was a teen I was worried about that, not for considering one race superior to another (I have never been a racist), but because I wished to belong to one well defined racial identity. Now I don't care about it.
I am mostly Italian, but there used to be Phoenicians in Cerdegne, the Island my grandafather came from. Other ancestors of mine were Basque, so not IndoEuropeans either. And my great-great-grandfather was Danish (probably Gemanic origin). Some other ancestor were Argentinians, Spanish settlers, probaly mixed with Amerindians.
Noone is racially pure.