Iraqi security officers examine a car damaged by a roadside bomb in Basra, 340 miles southeast of Baghdad, Iraq, Sunday, July 27, 2008. There were no immediate reports on possible casualties.
Shiite pilgrims walk down a street as they make their way to the shrine of Imam Musa al-Kazim, in Baghdad, Iraq, Sunday, July 27, 2008.
U.S.Army Gen. David Petraeus, the top commander in Iraq, speaks to soldiers from 3rd Squardron, 2nd Stryker Cavalry Regiment at Forward Operating Base Normandy in Muqdadiyah, about 60 miles north of Baghdad in Iraq's volatile Diyala province on Saturday, July 26, 2008.
People attend open air prayers in Baghdad's Shiite stronghold of Sadr City, Iraq, Friday, July 25, 2008.
People gather next to a site of a bomb explosion in Karbala, 50 miles south of Baghdad, Iraq, Friday, July 25, 2008. Iraqi authorities say a bomb explosion aboard a minibus has wounded nine civilians in the Shiite holy city.
A private security guard passes by a painted blast wall in Baghdad, Iraq, Friday, July 25, 2008. The art ornaments life with murals of soothing landscapes and historical heroes covering the blast walls that are now as much a part of Baghdad's cityscape as date palms and desert dust.
A childs queues as she waits for distribution of aid packages in Baghdad's Shiite enclave of Sadr City, Iraq, Thursday, July 24, 2008. The Iraqi Red Crescent organized on Thursday distribution of aid packages to families from Sadr City whose members perished in sectarian violence.
A man passes by election posters in Baghdad, Iraq, Thursday, July 24, 2008. Iraq's presidential council on Wednesday rejected a draft provincial elections law and sent it back to parliament for reworking, a major blow to U.S. hopes that the vote can be held this year.
An internally displaced person carries an aid package at a settlement in Baghdad, Iraq, Thursday, July 24, 2008. The International Organization for Migration says the displacement of people in Iraq has slowed to a trickle this year and that some of the country's 2.8 million uprooted have been encouraged to go home.
An internally displaced person carries an aid package into her house which is made out of tin cans at a settlement in Baghdad, Iraq, Thursday, July 24, 2008.
People drink tea and play domino's on a side street in Baghdad, Iraq, Wednesday, July 23, 2008.
People shop at a marketplace in north Baghdad's Kazimiyah neighborhood, Iraq, on Wednesday, July 23, 2008.
A U.S. Army soldier from Ghostrider Company, 3rd Squadron, 2nd Stryker Cavalry Regiment is seen through smoke and dust after bomb technicians destroyed an apparent al-Qaida hideout inside a cave in the Hamrin mountains during Operation Wolfpack Catseye near Qara Tappah, about 75 miles northeast of Baghdad in Iraq's volatile Diyala province on Tuesday, July 22, 2008.
A plume of smoke rises in the sky over a U.S. Army soldier from Ghostrider Company, Third Squadron, Second Stryker Cavalry Regiment after bomb technicians destroyed an apparent al-Qaida hideout inside a cave in the Hamrin mountains during Operation Wolfpack Catseye near Qara Tappah, about 75 miles northeast of Baghdad in Iraq's volatile Diyala province on Tuesday, July 22, 2008.
A U.S. Navy bomb disposal technician Rick Gatt examines an apparent al-Qaida hideout inside a cave in the Hamrin mountains during Operation Wolfpack Catseye near Qara Tapa, north of Baghdad in Iraq's volatile Diyala province on Tuesday, July 22, 2008. Three caves were destroyed during the operation.
A U.S. Army soldier from Ghostrider Company, Third Squardron, Second Stryker Cavalry Regiment leaps over an irrigation ditch as his platoon searches a rural village during Operation Wolfpack Catseye near Qara Tappah, about 75 miles northeast of Baghdad in Iraq's volatile Diyala province on Tuesday, July 22, 2008.
An Iraqi woman, carrying a newborn infant, scurries from her home as a U.S. Army soldier from Ghostrider Company, Third Squadron, Second Stryker Cavalry Regiment prepares to search the house during Operation Wolfpack Catseye near Qara Tappah, about 75 miles northeast of Baghdad in Iraq's volatile Diyala province on Monday, July 21, 2008.
A handcuffed suspected al-Qaida member, left, and a neighbor, right, perform their afternoon prayers while being detained by U.S. troops during Operation Wolfpack Catseye near Qara Tappah, about 75 miles northeast of Baghdad in Iraq's volatile Diyala province on Monday, July 21, 2008.
Iraqi police officers search a driver at a checkpoint in Baghdad, Iraq, Monday, July 21, 2008.
U.S. presidential candidate Barack Obama, left, top U.S. military commander in Iraq, David Petraeus, center, and U.S. Senator Chuck Hagel, R-Neb, ride inside a helicopter in Baghdad, Iraq, Monday, July 21, 2008.