The United States’ embrace of the “awakening” will go down in the history of the Iraq conflict as one of the gravest strategic errors made in a field of grave errors. The U.S. military in Iraq has never fully understood the complex interplay between the Sunni resistance, al-Qaida in Iraq, and the former government of Saddam Hussein. Saddam may be dead, but not so his plans for resistance. The massive security organizations which held sway over Iraq during his rule were never defeated, and never formally disbanded. The organs of security which once operated as formal ministries now operate as covert cells, functioning along internal lines of communication which are virtually impenetrable by outside forces. These security organs gave birth to al-Qaida in Iraq, fostered its growth as a proxy, and used it as a means of sowing chaos and fear among the Iraqi population.
I could get with Ritter on this except, I think some elements of AQ are our own CIA, Special forces and or private contractors (or both) to keep the shit stirred up and the taxpayer funding on non stop flow. None the less, it's well worth your time to read. And his summation is just fucked enough to be on target.