Middle East’s conflict about role of religion spreading East

An old debate about the role of religion has come to the fore. To what extent should it determine political legitimacy, social frames of reference, and personal identities?
Religion’s social role is a conspicuous problem in the Middle East. But now it is causing tensions in Europe, as well, owing to the influx of predominantly Muslim refugees, and in the United States, where president-elect Donald Trump’s campaign stoked fears about Islamist radicalism.