Aziz Ahmed, left, is comforted by a relative as he weeps for his brother, Iraqi border guard Mahdi Ahmed, who was one of seven guards killed along with a civilian when gunmen ambushed their convoy in the Kani Khal area, 160 miles northeast of Baghdad, Iraq, Sunday, July 15, 2007. A border guard commander said the Sunni extremist group Ansar al-Islam was believed to be behind the attack.
Oil tankers are filled in al-Bakir Harbor in Basra, Iraq, 340 miles southeast of Baghdad, Iraq Sunday, July 15, 2007.
Iraqi firefighters clean up the site where a parked car bomb killed 10 and wounded 25 people in the Karradah neighborhood in downtown Baghdad, Iraq Sunday, July 15, 2007.
A man passes wrecked vehicles after a car bomb attack on vehicles lined up at a gas station in southeastern Baghdad, Iraq, killing seven and injuring 15 people Saturday, July 14, 2007.
People pick through the rubble left behind after a parked car bomb killed a pedestrian and wounded 5 others in the Amil neighborhood of western Baghdad, Iraq, Saturday, July 14, 2007. It was unclear what the intended target was when the explosion occurred at 7:30 a.m., police said.
Worshippers attending Friday prayers get relief from the heat by a man carrying a water tank bearing a picture of radical Shiite cleric Muqtada al-Sadr in the Sadr City neighborhood in Baghdad, Iraq, Friday, July 13, 2007.
Relatives weep over Saeed Chmagh's coffin in the Shiite enclave of Sadr City in Baghdad, Iraq Friday, July 13, 2007. Chmagh, 40, a driver employed by Reuters news agency, and photographer Namir Noor-Eldeen, 22, were killed in Iraq Thursday in an area of eastern Baghdad where U.S. forces were battling militants, the London-based agency said.
Iraqis attend Friday prayers in the Shiite neighborhood of Sadr City in Baghdad, Iraq, Friday, July 13, 2007.
A soldier of the 1st Battalion, 5th Cavalry Regiment walks through a vault-like door of a Saddam-era fortified concrete bunker that's being converted to an Army field post July 13, 2007 in the tense Amariyah neighborhood of Baghdad, Iraq.
Hikmat al-Kaissy,65, left, helps his wife, Umm Zuhair,65, navigate the rubble outside their home after an overnight raid in the Azamiyah neighborhood by U.S. troops Thursday, July 12, 2007, in Baghdad, Iraq.
An Iraqi oil tanker is seen smoldering late Wednesday, July 11, 2007, in the Shiite area of al-Ubaidi in east Baghdad, Iraq.
A relative of Saeed Chmagh, an Iraqi driver working with Reuters, weeps as he walks next to the vehicle carrying his coffin outside a Baghdad hospital morgue, July 13, 2007.
A U.S. tank secures the area where a U.S. Humvee was attacked in Baghdad's Camp Sara neighborhood, July 11, 2007.
An Iraqi boy clutches a rock in his hand as he approaches the burning wreckage of a U.S. Humvee destroyed by a roadside bomb in eastern Baghdad, Iraq, Wednesday, July 11, 2007. One civilian close to the blast was killed and two were injured, police said. There was no information on U.S. casualties.
An Iraqi boy stands near two cars destroyed in an overnight raid by U.S. and Iraqi troops in the Shiite enclave of Sadr City in Baghdad, Iraq, Tuesday, July 10, 2007. Police said two were killed and four injured by U.S. and Iraqi forces conducting house-to-house searches in three sections of the neighborhood. Two cars were burned along with a store.
An Iraqi woman passes a store that was destroyed in an overnight raid by U.S. and Iraqi troops in the Shiite enclave of Sadr City in Baghdad, Iraq, Tuesday, July 10, 2007.
A young boy watches as U.S. and Iraqi soldiers detain a man suspected of providing false documents for al-Qaida during a pre-dawn raid in Baqouba, 35 miles northeast of Baghdad, Iraq, Monday, July 9, 2007.
Protesters hoist a large Iraqi flag as nearly 1,000 Shiites loyal to anti-American cleric Muqtada al-Sadr take to the streets in the Shu'la neighborhood of Baghdad, Iraq, Monday, July 9, 2007, demanding the release of a senior cleric and other detainees.
An Iraqi policeman examines the wreckage from a car-bomb attack that injured a woman in the Harithiyah neighborhood of western Baghdad, Iraq, Monday, July 9, 2007.
A U.S. soldier detains a man suspected of carrying out executions for al-Qaida during a pre-dawn raid in Baqouba, 35 miles northeast of Baghdad, Iraq, Monday, July 9, 2007.