Although many persist in denying it, I continue to believe that what September 11, 2001 did was to plunge us headlong into nothing less than another world war. I call this new war World War IV, because I also believe that what is generally known as the cold war was actually World War III, and that this one bears a closer resemblance to that great conflict than it does to World War II. Like the cold war, as the military historian Eliot Cohen was the first to recognize, the one we are now in has ideological roots, pitting us against Islamofascism, yet another mutation of the totalitarian disease we defeated first in the shape of Nazism and fascism and then in the shape of Communism; it is global in scope; it is being fought with a variety of weapons, not all of them military; and it is likely to go on for decades.