Donald Kagan is one of America's most eminent historians. He is the Hillhouse Professor of History and Classics at Yale University and the author or co-author of many books including The Western Heritage, On the Origins of War and the Preservation of Peace, and a four-volume history of the Peloponnesian War. He also has published dozens of articles as well as commentary for the Wall Street Journal, the New York Times, and elsewhere. His son Frederick Kagan is a professor of military history at the U.S. Military Academy at West Point and the author of The Military Reforms of Nicholas I as well as numerous scholarly, technical, and general interest articles in publications including the Wall Street Journal, Commentary, Parameters, and the National Interest.