Importantly, he acknowledges that the U.S. had become far too focused on counter-insurgency over the past two decades, but he seems to miss the causation of this mission in the first place. U.S. foreign policy, and its reliance on military intervention to solve all perceived problems, regime change and imperialist adventurism, resulted in the need to occupy nations, or destroy them. This leads to the growth of insurgencies, and the strengthening of long simmering religious radicalism and anti-western sentiment in the Middle East and Central Asia. The U.S. military willfully threw itself headlong into a self-fulfilling prophecy.
The United States engaged in unnecessary wars, and when these wars were easily won on the immediate battlefield, the unplanned for occupations lead to guerilla insurgencies that were not so easy for a conventional military to confront. The U.S. Army was not prepared for guerilla warfare in urban areas, nor for the brutal and immoral tactics that their new enemies were willing to engage in.