In the Quadrennial Defense Review Report, the U.S. Department of Defense affirms that “The United States is involved in a war that is both a battle of Arms and a battle of Ideas. A war in which ultimate victory will be achieved only when extremist ideologies are discredited in the eyes of their host populations and its supports.”

And in the 9/11 Commission report (p. 363) the following was stated:

“Our enemy is twofold: Al Qaeda, a stateless network of terrorists that struck us on 9/11; and a radical ideological movement in the Islamic world, inspired in part by Al Qaeda, which has spawned terrorist groups and violence across the globe. The first enemy is weakened, but continues to pose a grave threat. The second enemy is gathering, and will menace Americans and American interests long after Usama Bin Ladin and his cohorts are killed or captured. Thus our strategy must match our means to two ends: dismantling the Al Qaeda network and prevailing in the longer term over the ideology that gives rise to Islamist terrorism.”