Iraqi boy watches a US tank roll by a wreck of a car bomb in Baghdad, Iraq, Sunday, April 15, 2007. Two car bombs exploded minutes apart in a busy Baghdad Shurtah market in a mainly Shiite district Sunday, killing at least 18 people.
An Iraqi Shiite boy attends the weekly Friday prayers at Imam Musa al-Kadhim's Shrine in Baghdad, April 13, 2007.
Iraqi policemen guards the empty al-Sinaq bridge as a group of boys enjoy the chance to play football during the traffic curfew in Baghdad, April 13, 2007.
A US soldier shares a moment with Iraqi children as he patrols a popular market at Baghdad's al-Kadhimiyah district, April 13, 2007.
Iraqi fisherman steers his boat along the Tigres River in Baghdad, April 12, 2007.
A billboard advertising telecommunication services appears in Baghdad, April 12, 2007 nearby destroyed houses, which were demolished during the U.S. led war on Iraq four years ago.
Image from television via AP Television News shows a man and a woman leaving the area through thick dust following an explosion in the Iraqi parliament cafeteria within the Green Zone in Baghdad, Iraq. Thursday April 12, 2007.
Emergency services look for survivors next to a collapsed bridge in Baghdad, Iraq, Thursday, April 12, 2007. A suicide truck bomb exploded on a major al-Sarafiya bridge in Baghdad early Thursday, collapsing the steel structure and sending cars toppling into the Tigris river below, police and witnesses said.
Iraqi soldier stands next to a collapsed bridge in Baghdad, Iraq, Thursday, April 12, 2007. A suicide truck bomb exploded on a major al-Sarafiya bridge in Baghdad early Thursday, collapsing the steel structure and sending cars toppling into the Tigris river below, police and witnesses said.
The bloodied boots of a policeman who was killed while on guard duty at the al-Sarafiya bridge are seen at Karkh hospital yard in Baghdad, Iraq, Thursday, April 12, 2007. The policeman tried initially to diffuse the bomb after a driver parked the truck in the middle of the bridge and ran away.
U.S. Army soldier Jimmie Arnold watches a game of pool being played by some Iraqi men while Iraqi and U.S. Army soldiers search a house in Mansour, Baghdad, Iraq, Tuesday, April 10, 2007. Arnold is assigned to the 3rd Platoon Alpha Company, 2nd Battalion, 3rd Infantry Regiment, 3rd Stryker Brigade Combat Team, 2nd Infantry Division, Fort Lewis, Wash.
An Iraqi policeman secures the site where a car bomb exploded in central Baghdad, April 10, 2007. A car bomb killed five people and wounded another 10 near the Baghdad University, security officials said. The bombing took place in the southwestern Jadiriyah district of the capital.
People stand by twisted metal of what was a car bomb near a university in Baghdad, Tuesday, April 10, 2007. A parked car bomb exploded at a checkpoint near Baghdad University, killing at least six people and wounding 11, police said.
Aftermath of car bomb blast near Baghdad University, Baghdad, Iraq, Tuesday, April 10, 2007.
A student points at a bloodied school book after a rocket landed at a school yard in eastern Baghdad, Iraq, Tuesday, April 10, 2007. A Katushya rocket hit a basketball court at the boys' school in eastern Baghdad on Tuesday, killing a 6-year-old boy and wounding 17 others, 15 students and two teachers, police said.
A boy slooks at the damage after a rocket landed at a schoolyard in eastern Baghdad, Iraq, Tuesday, April 10, 2007.
Students check their classroom after a rocket landed at a schoolyard in eastern Baghdad, Iraq, Tuesday, April 10, 2007.
Followers of radical anti-U.S. cleric Muqtada al-Sadr burn an American flag in the holy city of Najaf, Iraq, Monday, April 9, 2007. Tens of thousands draped themselves in Iraqi flags and marched through the streets of two Shiite holy cities, Najaf and Kufa, in a rally that was called for by al-Sadr, who issued a statement ordering his militiamen to redouble their battle to oust American forces.
Shiite women, followers of radical anti-U.S. cleric Muqtada al-Sadr, hold Iraqi flags in the holy city of Najaf, Iraq, Monday, April 9, 2007, on the fourth anniversary of the fall of Baghdad to the U.S. forces.
Followers of radical anti-U.S. cleric Muqtada al-Sadr tear up an American flag in the holy city of Najaf, Iraq, Monday, April 9, 2007, on the fourth anniversary of the fall of Baghdad to U.S. forces.