Throughout the nineteenth and twentieth centuries, ethnonationalism has left its indelible mark on Europe and every other continent. The latest events in the Balkans, in central and eastern Europe, and in the former Soviet Union unequivocally testify to the power and influence of ethnonationalism at the end of the second millennium. What forces make people so committed to their ethnonational groups that they are ready to ignore all other concerns, first and foremost the rights and interests of people of other ethnicities? What is the social psychological and anthropological underpinning of...