of a Polish-Iberian-Scandinavian connection, would seem to be anyway just a little over the top-:)
There are some links from the Polish side for sure.
Such as the first Kurgan found was 6,000 years old in Poland
While a 3,000 year old Kurgan was found in Sweden.
This is part of the Cordedware culture that was in Poland, Russia, East & North Germany & Southern Scandanavia.
Which shows a direct link of Sweden with Poland in their prehistory.
The Iberian part is much more of a gray area.
For awhile it was thought that I1 haplogroup may have come from & started in the Ukraine.
But, the most recent genetic research suggests that the I1 haplogroup common in Scandanavia actually came from Iberia.
Which kind of fits to why Danny Saucedo looks like a Swede so much when he is a mix of Polish & Bolivian (Spanish)
DNA evidence has in fact shown that blond, light-skinned travelers did in fact reach the Gobi Desert even before Marco Polo, in the matter of the present thread, I definitely need to see more!!
Yes, There are the Tocharian Tarim basin mummies in Western China who were often Blonde & Red haired. The Chinese also depicted them as Blonde & Red haired with Light eyes.
Central Asians have direct roots in Poland actually. (But they later mixed with Mongolian type stock) this is why you see some Tatars & Uzbeks & Other Central Asians ect that sometimes look kind of Slavic & Sometimes kind of Mongolian.
The genetic evidence shows the R1a haplogroup in Poland directly spread from Poland into Central Asia a few thousand years ago.
These people were thought to be Indo-Europeans who likely bought the Indo-European language to India.
But, It is all so complex.