An Iraqi police officer uses a bomb detector at a checkpoint in central Baghdad, Iraq, Monday, Aug. 2, 2010. Two bombings and a drive-by shooting killed eight people Monday, a reminder of Iraq's ongoing instability on a day when President Obama planned to outline progress toward the impending end of U.S. military operations in the country.(AP Photo/Karim Kadim)

Photo by: Karim Kadim

An Iraqi police officer uses a bomb detector at a checkpoint in central Baghdad, Iraq, Monday, Aug. 2, 2010. Two bombings and a drive-by shooting killed eight people Monday, a reminder of Iraq's ongoing instability on a day when President Obama planned to outline progress toward the impending end of U.S. military operations in the country.(AP Photo/Karim Kadim)