Krauthammer: Who lost Iraq?

Charles Krauthammer  "Barack Obama was a principled opponent of the Iraq war from its beginning. But when he became president in January 2009, he was handed a war that was won. The surge had succeeded. Al-Qaeda in Iraq had been routed, driven to humiliating defeat by an Anbar Awakening of Sunnis fighting side-by-side with the infidel Americans. Even more remarkably, the Shiite militias had been taken down, with U.S. backing, by the forces of Shiite Prime Minister Nouri al-Maliki. They crushed the Sadr militias from Basra to Sadr City.
"Al-Qaeda decimated. A Shiite prime minister taking a decisively nationalist line. Iraqi Sunnis ready to integrate into a new national government. U.S. casualties at their lowest ebb in the entire war. Elections approaching. Obama was left with but a single task: Negotiate a new status-of-forces agreement (SOFA) to reinforce these gains and create a strategic partnership with the Arab world’s only democracy.
"He blew it."....
....
"He did not, failing at precisely what this administration so flatters itself for doing so well: diplomacy. After years of allegedly clumsy brutish force, Obama was to usher in an era of not hard power, not soft power, but smart power .
"Which turns out in Iraq to be . . . no power. Years from now, we will be asking not “Who lost Iraq?” — that already is clear — but “Why?” "