In the violent world of radical extremists, "the enemy of my enemy is my friend." In this provocative study, George Michael reveals how that precept plays out in the unexpected bonding between militant Islam and the extreme right in America and Europe.

At first glance these two groups would seem to share little if any common ground. Why would various neo-Nazis, Holocaust deniers, white separatists, and antigovernment radicals find themselves attracted to movements such as Al Qaeda, Hezbollah, Hamas, and Egyptian Islamic Jihad? After all, the extreme right's racist and radical Christian...