Retrospective: Fifteen years in Iraq

A U.S. soldier watches as a statue of Iraq's President Saddam Hussein falls in central Baghdad, April 9, 2003.more

An explosion rocks Baghdad during air strikes, March 21, 2003. REUTERS/Goran Tomasevic

A U.S. Navy Hospital Corpsman, assigned to the 1st Marine Division, holds an Iraqi child in central Iraq, Marcmore

An Iraqi girl holds her sister as she waits for her mother (R) to bring over food bought in Basra, March 29, 2more

A body of Iraqi man lies by the road side north of Al Nassiriyah, March 25, 2003. REUTERS/Damir Sagolj

A Marine of the U.S. Marine Expeditionary Unit Fox Company 'Raiders' replaces the Iraqi flag at the entrance tmore

A family flees past a destroyed Iraqi T-55 tank after a mortar attack on British Army positions in the southermore

Soldiers with the 3/21 of the U.S. Army's Stryker Brigade secure a police station which had been over-run by imore

U.S. Army Chinook and Black Hawk helicopters fly over Baghdad as smoke rises from the Dhora electric generatinmore

A U.S. soldier and Iraqi policeman search a room as an Iraqi child sleeps on the bed during a joint raid by thmore

U.S. soldiers pray during a memorial service for late PFC Allen Brenton Jaynes from Texas, in the U.S. forces more

A detained Iraqi man with a plastic bag covering his head sits in garden of a house searched by U.S. soldiers more

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

A frame grab taken from website video May 2004 footage shows a man, who identified himself as Nick Berg of Phimore

U.S. Marine platoon Gunnery Sergeant, Ryan P. Shane (C), from the 1st Battalion of the 8th Marine Regiment andmore

British troops covered in flames from a petrol bomb thrown during a violent protest by job seekers, who say thmore

A group of Iraqi boys gather to watch smoke billowing from burning oil on the outskirts of the town of Baiji, more

An Iraqi man suspected of having explosives in his car is held after being arrested by the U.S army near Baqubmore

Former Iraqi President Saddam Hussein argues with prosecutors while testifying during cross-examination at hismore

A row of U.S. Army helmets perched on M-16 rifles during a memorial at Al Asad air base for the 15 victims of more

A U.S. soldier displays the picture of the dead Al Qaeda leader in Iraq, Abu Musab al-Zarqawi, during a news cmore

An Iraqi girl holds her hands up while U.S. and Iraqi soldiers search her family house in Baquba, June 30, 200more

An Iraqi police officer checks a donkey, pulling a disabled man on a cart, before allowing it to enter a pollimore

Bodies of Iraqis killed in an explosion at a busy market lie inside a hospital morgue in Baghdad, May 9, 2004.more

U.S. soldiers push the car of an Iraqi man to start the engine at a checkpoint in north Baghdad, June 13, 2007more

U.S. soldiers blindfold an Iraqi man after arresting him during a night patrol at the Zafraniya neighborhood, more

A man runs down a street warning people to flee shortly after a twin car bomb attack at Shorja market in Baghmore

Stretchers are left against the wall after victims of the bomb attack were brought to a morgue in Baghdad, Augmore

A U.S. flag with greetings from home is decorated in an emergency room of the 28th Combat Support hospital in more

An Iraqi man unbuttons his shirt as U.S. soldiers point their laser sights on him during an operation near Baimore

Men try to push a vehicle away from the scene of a suicide bomb attack in Baghdad, April 5, 2007. REUTERS/Smore

An Iraqi baby lies in a cradle while a woman argues with U.S. soldiers of 1/8 Bravo Company searching for weapmore

U.S. President George W. Bush with Defense Secretary Robert Gates and Secretary of State Condoleezza Rice follmore

Relatives grieve as the bodies of policemen are transported to a hospital morgue in Kirkuk, August 12, 2007. Rmore

Iraqi police remove a suicide vest from a teenage Iraqi girl in Baquba, August 24, 2008. REUTERS/Iraqi Polmore

A U.S. medic talks to an Iraqi woman as he holds her injured son at the emergency room of 28th Combat Support more

Smoke rises near the Iraqi Ministry of Justice, shortly after a blast, in Baghdad, October 25, 2009. REUTEmore

Iraqi soldiers look at a former colleague as he runs with a new prosthetic leg during the opening of an Iraqi more

U.S. Air Force Major Stacie Shafran carries her luggage to a loading paddock while waiting for her departure fmore

U.S. Mine Resistant Ambush Protected (MRAP) vehicles drive through Camp Adder before departing Imam Ali Base nmore

Kuwaiti and U.S. soldiers close the border gate after the last vehicle crossed into Kuwait during the US miltamore

An Iraqi boy is taken away from a suspected militant, who has been accused of killing his father at the heightmore

An explosion is seen during a car bomb attack at a Shi'ite political organisation's rally in Baghdad, April 25more

Members of the Iraqi Special Operations Forces take their positions during clashes with the al Qaeda-linked Ismore

Displaced people from the minority Yazidi sect, fleeing violence from forces loyal to the Islamic State in Sinmore

A girl from the minority Yazidi sect, fleeing the violence in the Iraqi town of Sinjar, rests at the Iraqi-Syrmore

Iraqi security forces hold an Islamist State flag near the bodies of dead Islamic State members in the outskirmore

Shi'ite fighters fire a rocket during clashes with Islamic State militants in Salahuddin province, March 1, 20more

A member from the Iraqi security forces beats an Islamic State insurgent, who was captured in Tikrit, April 1,more

A female Kurdistan Workers Party fighter stands near a security position in Sinjar, on the front line of the bmore

Newly displaced people wait to receive food supplies at a processing center for displaced people In Qayyara, smore

A man cries as he carries his daughter while walking from an Islamic State-controlled part of Mosul towards Irmore

Members of Iraqi Counter Terrorism Service (CTS) forces look at the positions of Islamic State militants durinmore

Members of the Iraqi army drop leaflets over the old city of Mosul, June 18, 2017. REUTERS/Ahmed Saad