>>18085379
R haplogroup is not a proof these men were Indo European. The haplogroup mutated in Eastern Siberia like 30k years ago whereas Indo European languages may have emerged no earlier than the last 10000 years or so. R1B Around lake Chad is associated with the prevalence of Chadic languages which are distantly related to Afro Asiatic languages like Semitic, Berber and Egyptian, so their appearance there although weird, but may indicate a population that invaded from Asia or North Africa during the early Neolithic or even Mesolithic. R1B may have been already spread in West Europe and across Asia when the original Indo Europeans split from Anatolians in Eastern Europe. Don’t confuse genetics and language.