“The threat of radical Islam is not merely a few thousand terrorists using small explosives to kill a few dozen people at a time—usually in the faraway Middle East. Rather, it is an historic recrudescence of a violent, conquering old tradition of Islam that almost overwhelmed the world from the Seventh Century until as recently as the 17th century. It is radicalizing the minds of increasing numbers of the world’s 1.4 billion Muslims to be very aggressive culturally, as well as violent—from Africa to Indonesia, to Cairo to Ankara, to Paris, to Rotterdam to London to Falls Church, Va.” —Tony Blankley