I can't recommend this Frontline piece highly enough - "Losing Iraq". Its practically a case book study on the missteps that took place under the leadership of Paul Bremmer a Kissinger associate and who was chosen to lead the CPA - Coalition Provisional Authority(the transition government) after the US took Baghdad. Bremmer knew nothing of Iraqi politics and was only briefed on them on the flight to Baghdad. The largest mistake was his decision to dissolve the Iraqi Army, followed closely by the de-Baathification of the government in country that only has a single political party - the Baath Party. Bremmer had near autonomy in his decision making. This is perhaps one of the best pieces I have seen on the subject:
