Poutin has a mix look that shows some evident 'est-baltic' element (flaxen blond and staight hair) - he is sub-brachycephalic (apparently) and shows also some north-east forest people where play a "feotalized alpinelike" element (maybe without any tie to true western 'alpine', or if so, by the females mediated, see Lapps or Saami) and a very very slight mongoloid' element, the two of them found as elements among Saami and other norh-eastern population of Russia, Karelia, where the mongoloid admixture is not too recent (4000/5000 years ago???) -
as said yet by other forumers here, there is nothing as an 'indo-european phenotype' (at least at protohistoric times)- we can only said that the crossings which was common among steppic people supposed to be I-E encompassed a majority of tall dolichocephals and a minority of brachycephals, where the tall 'dinaroid' ones seam having been the strongest (I see this 'dinaric' element as being come from the eastern carpathians at bronze time, perhaps already before) - and to complicate the game, among the dolichocephalics was some 'nordics', (high faced, not brutal) some 'brünnoids' or 'capelloids' high faced, brutal shape), and even some 'cro-magnoids' with elongated skulls BUT BROAD faces (not brutal but robust) - so the correlation crania-face has to be verified... 'iranid' ('indo-afghan' for you?) and 'nordic' have not at all the same shapes, even if tall and dolichocephalic - 'iranid' goes closer to 'capelloid' I think -
don't believe environment is yet playing a quick role upon human beings: yet, 'cromagnon' paradigm had not the morphology for cold climates, very less than 'neanderthal' - some dozens of generations are not sufficient to change phenotypes; because human genotype is complicated adn internally interactive - don't forget human beings wore clothes a long time ago... all the tales about dates of depigmentation, hairs form and things like that have to be more supported (let's compare different populations, internally and externally)