AP Photo/Loay Hameed
An Iraqi man peers into a minibus where four children were wounded in clashes between the Mahdi Army and U.S. and Iraqi troops in southwestern Baghdad, Iraq, on Sunday, April 27, 2008. Police said two people were killed and 12 wounded during the fighting.
AP Photo/Alaa al-Marjani
An Iraqi soldier covers his face as a sandstorm envelops the Shiite holy city of Najaf, 100 miles south of Baghdad, Iraq, on Sunday, April 27, 2008.
AP Photo/Khalid Mohammed
An Iraqi Army soldier uses a flashlight to signal cars to turn off their headlights as a sandstorm envelops central Baghdad, Iraq, on Sunday, April 27, 2008. Militants fired a salvo of rockets or mortars at the heavily guarded Green Zone on Sunday, apparently taking advantage of a sandstorm that blanketed the Iraqi capital and grounded U.S. helicopters and drones that normally track their activities.
AP Photo/Alaa al-Marjani
Residents collect trash at a dump in the Shiite holy city of Najaf, 100 miles south of Baghdad, Iraq, Saturday, April 26, 2008.
AP Photo/Karim Kadim
Young children peek from behind a bullet-ridden wall in the Shiite enclave of Sadr City in Baghdad, Iraq, Friday, April 25, 2008.
AP Photo/Maya Alleruzzo
U.S. Army soldiers from B Company, 1st Squadron, 2nd Stryker Cavalry Regiment patrol in the Shiite stronghold of Sadr City in Baghdad, Iraq, on Friday, April 25, 2008.
AP Photo/Hadi Mizban
An Iraqi Army soldier points his rifle after a woman refused to cooperate and throw away her purse, in the Mansour neighborhood in western Baghdad, Iraq, Thursday, April 24, 2008. The woman was taken into custody for questioning.
AP Photo/Hadi Mizban
Residents walk past a shop that was destroyed by a bomb explosion in the Mansour neighborhood of western Baghdad, Iraq, Thursday, April 24, 2008. A bomb hidden at a garbage area in Mansour went off at about 1 p.m. on Thursday and caused the death of a 7-year-old girl and wounded 13 others.
AP Photo/Khalid Mohammed
Newly released detainees take an oath on the Koran to commit no crime, after they were released from U.S. custody in Baghdad, Iraq, Thursday, April 24, 2008. The U.S. military released 19 men from detention Thursday.
AP Photo/Maya Alleruzzo
An Iraqi woman is seen in the background as U.S. Army soldiers from B Company, 1st Squadron, 2nd Stryker Cavalry Regiment questions her family during a patrol in the Shiite stronghold of Sadr City in Baghdad, Iraq, on Wednesday, April 23, 2008.
AP Photo/Karim Kadim
Young Iraqi boy moves a barrel from the rubble of a damaged house in the Shiite enclave of Sadr City in Baghdad, Iraq, Tuesday, April 22, 2008.
AP Photo/Maya Alleruzzo
U.S. Army soldiers from B Company, 1st Squadron, 2nd Stryker Cavalry Regiment lead a blindfolded man suspected of planting a roadside bomb near their patrol in the Shiite stronghold of Sadr City in Baghdad, Iraq on Wednesday, April 23, 2008. The man later tested positive for traces of explosives on his hands.
AP Photo/Karim Kadim
Iraqis rush a wounded man into a hospital in the Shiite enclave of Sadr City in Baghdad, Iraq, Tuesday, April 22, 2008. The man, injured in recent violence died few minutes later according to hospital officials.
AP Photo/Karim Kadim
Hana Ahmed lies in a hospital in the Shiite enclave of Sadr City in Baghdad, Iraq, Tuesday, April 22, 2008. Hana was wounded in recent violence in Sadr City.
AP Photo/Khalid Mohammed
Iraqi national police graduates demonstrate their skills during a ceremony in Baghdad, Iraq, Monday, April 21, 2008.
AP Photo/Maya Alleruzzo
A U.S. Army soldier from B Company, 1st Squadron, 2nd Stryker Cavalry Regiment carries his weapon as he looks for a rooftop view in the Shiite stronghold of Sadr City in Baghdad, Iraq, on Monday, April 21, 2008.
AP Photo/Maya Alleruzzo
U.S. Army Sgt. Derek Arnold, 24, from Boring, Ore. waits to go before the promotion board at an outpost for B Company, 1st Squadron, 2nd Stryker Cavalry Regiment in the Shiite stronghold of Sadr City in Baghdad, Iraq, on Monday, April 21, 2008.
AP Photo/Maya Alleruzzo
U.S. Army soldiers from B Company, 1st Squadron, 2nd Stryker Cavalry Regiment search a house in the Shiite stronghold of Sadr City in Baghdad, Iraq, on Monday, April 21, 2008.
AP Photo/Maya Alleruzzo
A U.S. Army soldier from B Company, 1st Squadron, 2nd Stryker Cavalry Regiment passes a map of Iraq posted in the window of a home while his platoon searches for weapons in the Shiite stronghold of Sadr City in Baghdad, Iraq, on Monday, April 21, 2008.
AP Photo/Karim Kadim
An Iraqi woman walks past the rubble of her damaged house in the Shiite enclave of Sadr city in Baghdad, Iraq, Monday, April 21, 2008.