An Iraqi police officer stands at a checkpoint in central Baghdad, Iraq, Saturday, Aug. 28, 2010. The Iraqi prime minister put his nation on its highest alert for terror attacks, as insurgents hammer Iraqi security forces preparing to take over for a U.S. combat mission that formally ends on Tuesday. (AP Photo/Khalid Mohammed)
September 1, 2010 7:11:29 AM PDT
By ANNE GEARAN, AP National Security Writer
RAMADI, Iraq - September 1, 2010 --
Defense Secretary Robert Gates said Wednesday that history will judge whether the war in Iraq was worth it.