Without a doubt, the United States military mission in Iraq is facing an unprecedented challenge facing an insurgent that was completely unexpected when the conflict began. One just-published response is “The U.S. Army – Marine Corps Counterinsurgency Field Manual” (University of Chicago Press, 2007). We’ll talk this hour with Lt. Col. John A. Nagl, Military Assistant to the Deputy Secretary of Defense and Sarah Sewall, Director of the Carr Center for Human Rights Policy at Harvard’s Kennedy School of Government.