A detained Iraqi man with a plastic bag covering his head sits in garden of a house searched by U.S. soldiers during a night raid in Tikrit October 30, 2003. Soldiers of U.S. Army's 4th Infantry Division (Task Force Ironhorse) raided several houses in Tikrit looking for members of suspected terrorist cell planing attacks on coalition forces in Saddam Hussein's hometown Tikrit.

U.S. soldiers pray during a memorial service for late PFC Allen Brenton Jaynes from Texas, in the U.S. forces army camp in Baghdad, January 26, 2007. Jaynes was killed last week by a roadside bomb while four of his colleagues were wounded.

British Army troops are covered in flames from a petrol bomb thrown during a violent protest by job seekers, who say they were promised employment in the security services, in the southern Iraq city of Basra March 22, 2004. As the protest evolved into violence, demonstrators were heard to chant, "Yes yes to Yassin, no no to America, Britain and Israel" in response to the killing in Gaza of Hamas founder and spiritual leader Sheikh Ahmed Yassin.

An Iraqi detainee gestures toward U.S. soldiers through bars of his cell at Abu Ghraib prison outside Baghdad, May 17, 2004.

An Iraqi man suspected of having explosives in his car is held after being arrested by the U.S army near Baquba, Iraq, October 15, 2005. Iraqis headed to the polls in an historic referendum on Saturday, with up to 15 million eligible voters deciding on a controversial new post-Saddam Hussein constitution that its backers hope will unite the torn country. Amid intense security, including a ban on all traffic, voters flowed on foot to polling stations across Baghdad.

PICTURES OF THE YEAR 2004 - A frame grab taken from website video footage May 11, 2004, shows a man, who identified himself as Nick Berg of Philadelphia (C) seated in front of his five masked captors moments before he was executed. Al Qaeda's leader in Iraq beheaded an American civilian and vowed more killings in revenge for the abuse of Iraqi prisoners, an Islamist Web site said.

An Iraqi girl holds her hands up while U.S. and Iraqi soldiers search her family house in Baquba early June 30, 2007. REUTERS/Goran Tomasevic

A U.S. soldier and Iraqi policeman search a room as an Iraqi child sleeps on the bed during a joint raid by the 401 Military Police Company of the U.S. army and the Iraqi police in Tikrit, about 110 miles (180 kilometres) northwest of Baghdad September 29, 2003. Fifteen houses were searched and raided in an effort to capture Saddam Hussein loyalists. Four persons were detained for questioning.

A group of Iraqi boys gather to watch smoke billowing from burning oil on the outskirts of the town of Baiji, north of Baghdad, March 15, 2005. OPEC producers on Tuesday considered a Saudi proposal for a modest increase in oil output but warned they could not guarantee to cap record prices. Iraq is one of eleven members of the Organization of Petroleum Exporting Countries (OPEC).

A U.S. soldier watches as a statue of Iraq's President Saddam Hussein falls in central Baghdad April 9, 2003. U.S. troops pulled down a 20-foot (six metre) high statue of President Saddam Hussein in central Baghdad on Wednesday and Iraqis danced on it in contempt for the man who ruled them with an iron grip for 24 years. In scenes reminiscent of the fall of the Berlin Wall in 1989, Iraqis earlier took a sledgehammer to the marble plinth under the statue of Saddam. Youths had placed a noose around the statue's neck and attached the rope to a U.S. armoured recovery vehicle.

U.S. Navy Hospital Corpsman HM1 Richard Barnett, assigned to the 1st Marine Division, holds an Iraqi child in central Iraq in this March 29, 2003 file photo. Confused front line crossfire ripped apart an Iraqi family after local soldiers appeared to force civilians towards positions held by U.S. Marines. March 20 marks the one year anniversary of the beginning of the U.S. led war against Iraq. The war started on March 20 Baghdad local time, March 19 Washington D.C. local time.

Soldiers with the 3/21 of the U.S. Army's Stryker Brigade secure a police station which had been over-run by insurgents during last week's heavy fighting in Mosul, November 19, 2004. The U.S. military and Iraqi National Guard are attempting to reassert control over Mosul after a series of militant attacks November 10 and 11 during which over 75 percent of the local police abandoned their posts. REUTERS/Bob Strong Pictures of the month November 2004

A U.S. flag with greetings from home is decorated in an emergency room of the 28th Combat Support hospital in the Green Zone in Baghdad August 18, 2007. REUTERS/Damir Sagolj