Americas Destruction of Iraq by Washington insider Michael M. OBrien details the origins of radical Islamic terrorism now spreading across the Middle East and North Africa. The outgrowth of Americas involvement in Iraq, culminating with its March 2003 invasion, is the Islamic State-the most violent terrorist organization in history.

Michael OBrien is an outlier: a conservative and former political appointee in the administration of George W. Bush, with an abiding contempt for the political and military mismanagement of the Iraq War, officially referred to as Operation Iraqi Freedom. A...