"
Pointing out that Christmas is Jesus' birthday
and that Jesus is a recognized prophet in the
genealogy of the Quran would have served no
purpose. The Islamists' mental cartography is
binary: "Dar el-Islam, Dar el-Koffr" — Land of
Islam versus Land of Impiety. They want to de-
Westernize the Arab world..."
http://mobile.nytimes.com/2016/01/02/opinion/isis-war-on-christmas.html