https://www.newscientist.com/article/mg24132230-200-story-of-most-murderous-people-of-all-time-revealed-in-ancient-dna/:-(--Professor Dominik Wujastyk,Singhmar Chair in Classical Indian Society and Polity,Department of History and Classics,University of Alberta, Canada.South Asia at the U of A: sas.ualberta.ca