Nevertheless, since the beginning of the 19th century, Westerners have agreed to place the habitat of the p-i-e-speaking people(s) in central or east… - Gérard Fussman

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Nevertheless, since the beginning of the 19th century, Westerners have agreed to place the habitat of the p-i-e-speaking people(s) in central or eastern Europe, more rarely in Scandinavia, in any case not in Iran, nor in India...
European historians, who all considered it proven that the existence of languages of indo-european origin in India resulted from a movement of peoples from the North, could be content to draw large arrows on the maps representing the archaeologically empty territories where they had necessarily passed before crossing the Hindu-Kush barrier and penetrating into North-West India. It now appears that these territories were populated, urbanized and linked together by a complex network of commercial and cultural relations. Archaeologists then find themselves faced with the classic problem of having to correlate a material culture and a language.