Who's "No Win Situation"?

"The apparent evacuation of Baghdad by al Qaeda forces comes from direct orders issued by al-Masri, the former soldier who took control of the Iraqi wing of al Qaeda following the June 2006 bombing death of Zarqawi.

Initially, the intelligence officer informed Pajamas, the Baghdad-based AQ fighters did not want to leave. Al-Masri had to send unequivocal orders for their retreat, adding that one of the lessons from the Fallujah campaign was that Americans have learned how to prevail in house-to-house fighting. Masri said that remaining in Baghdad was a ‘no-win situation’ for the terrorists."