Iraq

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A column of U.S. Army Stryker armored vehicles cross the border from Iraq into Kuwait on Wednesday, Aug. 18, 2010. The U.S. Army's 4th Battalion, 9th Infantry Regiment, part of the 4th Brigade, 2nd Infantry Division, is the last combat brigade to leave Iraq as part of the drawdown of U.S. forces. (AP Photo/Maya Alleruzzo)

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U.S. Army soldiers from C Co., 4th Battalion, 9th Infantry Regiment, 2nd Infantry Division gather Saturday for a formation before driving from Iraq to Kuwait. The soldiers are the last combat brigade to leave Iraq as part of the drawdown of U.S. forces. (Associated Press)

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In this Aug. 16, 2010 photo, a U.S Army soldier dismantles a machine gun mounted on his Stryker armored vehicle immediately after crossing the border from Iraq into Kuwait. The U.S. Army's 4th Battalion, 9th Infantry Regiment, part of the 4th Brigade, 2nd Infantry Division, are the last combat brigade to leave Iraq as part of the drawdown of U.S. forces. (AP Photo/ Maya Alleruzzo)

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In this image from mobile phone video people look on the scene where at least 61 people were killed and 125 wounded in Iraq on Tuesday, Aug. 17, 2010, when a suicide bomber blew himself up among hundreds of army recruits who had gathered near a military headquarters in the capital, Baghdad. (AP Photo)

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In this image from mobile phone video people look on the scene where at least 61 people were killed and 125 wounded in Iraq on Tuesday, Aug. 17, 2010, when a suicide bomber blew himself up among hundreds of army recruits who had gathered near a military headquarters in the capital, Baghdad. (AP Photo)

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Iraqi security forces inspect the scene of a suicide attack in Baghdad, Iraq, Tuesday, Aug. 17, 2010. A suicide bomber blew himself up among hundreds of army recruits who had gathered near a military headquarters killing and wounding dozens of them, one of the bloodiest bombings in months in the Iraqi capital. (AP Photo/Hadi Mizban)

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A victim of a suicide attack waits for a doctor on the floor of the emergency room of a hospital in Baghdad, Iraq, Tuesday, Aug. 17, 2010. A suicide bomber blew himself up Tuesday among hundreds of army recruits who had gathered near a military headquarters in central Baghdad killing and wounding dozens of them. (AP Photo)

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Iraqi recruits gather near the military headquarters where a suicide attack in Baghdad, Iraq, Tuesday, Aug. 17, 2010. A suicide bomber blew himself up among hundreds of army recruits who had gathered near a military headquarters killing and wounding dozens of them, one of the bloodiest bombings in months in the Iraqi capital. (AP Photo/Hadi Mizban)

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Family members of Saif Ali, 24, grieve during his funeral in Najaf, south of Baghdad, Iraq, Tuesday, Aug. 17, 2010. Ali was killed when a suicide bomber sat for hours Tuesday among hundreds of army recruits before detonating nail-packed explosives strapped to his body, killing and wounding dozens of them and casting new doubt on the ability of Iraqi forces as U.S. troops head home. (AP Photo)

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Mourners load the coffin of Sarmd Hamza, 19, onto a vehicle during his funeral in Najaf, south of Baghdad, Iraq, Tuesday, Aug. 17, 2010. Hamza was killed when a suicide bomber sat for hours Tuesday among hundreds of army recruits before detonating nail-packed explosives strapped to his body, killing and wounding dozens of them and casting new doubt on the ability of Iraqi forces as U.S. troops head home. (AP Photo)

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In this image from mobile phone video people look on the scene where at least 61 people were killed and 125 wounded in Iraq on Tuesday, Aug. 17, 2010, when a suicide bomber blew himself up among hundreds of army recruits who had gathered near a military headquarters in the capital, Baghdad. (AP Photo)

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Iraqi security forces stand guard in central Baghdad, Iraq, Saturday, Aug. 14, 2010. Gunmen killed five Iraqi security personnel Saturday, including a pair of sleeping policemen who were shot and set on fire, amid persistent debate over whether Iraqi forces can protect the country as U.S. troops. (AP Photo/Karim Kadim)

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Iraqis evacuate a victim from the scene of an explosion in Basra, Iraq's second-largest city, 340 miles southeast of Baghdad, on Saturday, Aug. 7, 2010. (AP Photo/Nabil al-Jurani)

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ASSOCIATED PRESS U.S. Deputy Secretary of State Jacob Lew, left, and Adm. Mike Mullen, the top U.S. military officer, right, take a question from a reporter during a press conference in Baghdad, Iraq, Tuesday, July 27, 2010.

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President Obama speaks about Iraq and Afghanistan, Monday, Aug. 2, 2010, at the Disabled American Veterans national convention in Atlanta. (AP Photo/Charles Dharapak)

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President Obama speaks about Iraq and Afghanistan , Monday, Aug. 2, 2010, at the Disabled American Veterans national convention in Atlanta. (AP Photo/Charles Dharapak)

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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)

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In this photo taken Thursday July 22, 2010, Iraqi men play soccer in central Baghdad, Iraq. As the country is again coming dangerously close to being suspended for the third time from international football, the battle over control of the most popular sport reflects the fault lines of the power struggle over who should lead a new government and even taps into Arab-Kurdish tensions over disputed territory in the north. (AP Photo/ Khalid Mohammed)

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Associated Press A woman visits a grave in Section 60, where many soldiers from the Iraq and Afghanistan wars are buried, at Arlington National Cemetery in Arlington, Va. The number of graves that might be affected by mix-ups at Arlington National Cemetery grew from hundreds to as many as 6,600 on Thursday.