An Iraqi army soldier stands guard at a vehicle checkpoint at the entrance to Baghdad's Shiite enclave of Sadr City, Iraq, Sunday, March 4, 2007.
An Iraqi police officer inspects the wreckage of a car destroyed in a car bomb explosion in Baghdad, Iraq, Sunday, March 4, 2007.
A pilgrim carries a flag in Karbala, 50 miles south of Baghdad, Iraq, Sunday, March 4, 2007. Thousands of devout Shiite Muslims are converging on Karbala for the March 10 celebration of Arbaeen, which marks the end of the forty-day mourning period after the date of the death of Imam Hussein, the Prophet Muhammad's grandson, killed in Karbala in 680 A.D.
An Iraqi stands next to a wreckage of a car destroyed in a car bomb explosion in Baghdad, Iraq, Sunday, March 4, 2007. A parked car bomb went off in central Baghdad's Karradah neighborhood, killing at least two persons and wounding another five, police said.
A soldier holds a machine gun inside an Iraqi Air Force Huey II helicopter flying over central Baghdad, Iraq, Saturday, March 3, 2007. A batch of Huey II helicopters that have undergone technical upgrades in the U.S. were delivered to the Iraqi forces Saturday as a gift by the Kingdom of Jordan.
A man attends the joint Sunni-Shiite prayers in a mosque in central Baghdad, Iraq, Friday, March 2, 2007. The Iraqi government imposes a day long vehicle ban in Baghdad on Fridays, in an effort to prevent attacks on worshippers.
A man grieves over a coffin with the body of a policeman in a morgue in Najaf, 100 miles south of Baghdad, Iraq, Saturday, March 3, 2007.
Iraqi and American soldiers rush a teenager with multiple gunshot wounds they encountered on a joint patrol in Jenabi Village, southeast of Baghdad, Iraq Thursday, March 1, 2007. Soldiers from 4th Battalion, 31st Infantry Regiment and the Iraqi Army established a new base of operations in the rural area.
A U.S. Army 2nd Brigade 82nd Airborne Division soldier stands guard as his unit patrols central Baghdad, Iraq, Thursday, March 1, 2007. Baghdad appeared quieter Thursday, with only one person killed in a roadside bomb, police said.
A man stands near the entrance to a Shiite mosque in Baghdad's northeastern Shaab neighborhood, Thursday, March 1, 2007, as a stun grenade used in a raid lies on the ground. Joint U.S and Iraqi forces stormed the mosque in Shaab, searching for suspects in an overnight raid.
Smoke billows from the site of a car bomb attack in Baghdad Wednesday, Feb. 28, 2007. A car bomb ripped through a market in Baghdad killing at least 10 people, as the Iraqi government called a conference over the bloodshed that could see Washington hold its first direct talks with Iran and Syria.
Iraqi children walk past wrecked cars at the site of a car bomb attack in Baghdad, Tuesday, Feb. 27, 2007. At least 22 people were killed in Iraq in a spate of mortar and bomb attacks, including one on a popular central Baghdad eatery at lunchtime, security officials said.
A woman stands at the scene of a car bomb explosion in Baghdad, Iraq, Wednesday, Feb. 28, 2007. A car bomb killed at least ten people in a crowded commercial area of western Baghdad's mixed Sunni-Shiite Baiyaa neighborhood Wednesday, police said.
A man inspects the scene of a car bomb explosion in Baghdad, Iraq, Wednesday, Feb. 28, 2007. A car bomb killed at least ten people in a crowded commercial area of western Baghdad's mixed Sunni-Shiite Baiyaa neighborhood Wednesday, police said.
A man injured in a car bomb attack is wheeled out of Baghdad's Yarmouk hospital, Iraq, Wednesday, Feb. 28, 2007. A car bomb killed at least ten people in a crowded commercial area of western Baghdad's mixed Sunni-Shiite Baiyaa neighborhood Wednesday, police said.
Iraqi policemen handcuff a man after an explosion inside a building where the Iraqi Vice President, Adel Abdul-Mahdi, held a speech in Baghdad, Iraq, Monday, Feb. 26, 2007. Iraq's vice president escaped an apparent assassination attempt after a bomb exploded in municipal offices where he was making speech, knocking him down with the force of the blast that left at least 10 people dead.
A girl looks through the damaged window of her house after a car bomb explosion in Baghdad, Iraq, Tuesday, Feb. 27, 2007. A parked car bomb went off in central Baghdad's Karradah neighborhood, killing at least two people and injuring another four, police said.
Iraqi boys look through a window that was broken during a raid in Baghdad's Shiite enclave of Sadr City, Iraq, Tuesday, Feb. 27, 2007. Joint U.S. and Iraqi forces raided several houses in Sadr City early Tuesday morning and detained 16 persons, police said.
A man passes by cars destroyed in a car bomb explosion in Baghdad, Iraq, Tuesday, Feb. 27, 2007. A parked car bomb went off in central Baghdad's Karradah neighborhood, killing at least two people and injuring another four, police said.
A boy stands in a street after a roadside bomb went off in central Baghdad, Iraq, Monday, Feb. 26, 2007. The bomb targeted a U.S. army convoy, police said.