The battle on the horizon.
William Kilpatrick is an author and lecturer. His latest book, Christianity, Islam and Atheism: The Struggle for the Soul of the West was recently published by Ignatius Press.
Robert Spencer is the director of Jihad Watch and author of the New York Times bestsellers The Politically Incorrect Guide to Islam (and the Crusades) and The Truth About Muhammad. His latest book, Arab Winter Comes to America: The Truth About the War We're In, is now available.