By that fall, to its credit, the U.S. had helped craft an agreement in which Maliki remained prime minister but Iraqiya controlled key ministries. Yet as Ned Parker, the Reuters bureau chief in Baghdad, later detailed, “Washington quickly disengaged from actually ensuring that the provisions of the deal were implemented.” In his book, The Dispensable Nation, Vali Nasr, who worked at the State Department at the time, notes that the “fragile power-sharing arrangement … required close American management. But the Obama administration had no time or energy for that. Instead it anxiously eyed the exits, with its one thought to get out. It stopped protecting the political process just when talk of American withdrawal turned the heat back up under the long-simmering power struggle that pitted the Shias, Sunnis, and Kurds against one another.”
-- Peter Beinart, "Obama's Disastrous Iraq Policy: An Autopsy" (The Atlantic).