Iconic images from the Iraq War, 20 years after it began

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

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

An Iraqi girl holds her sister as she waits for her mother (R) to bring over food bought in Basra, March 29, 2003. REUTERS/Jerry Lampen

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

A US Army combat engineer, with Psalm 23 written on his kevlar, bows his head as he takes a short rest after securing an important two lane bridge over the Euphrates river, outside Baghdad, April 4, 2003. REUTERS/Kai Pfaffenbach

U.S. Marines from Lima Company, a part of a 7-th Marine Regiment, walk in front of the Martyrs Monument, during the operation of securing the center of Baghdad, April 9, 2003. REUTERS/Oleg Popov

U.S. Navy Hospital Corpsman HM1 Richard Barnett, assigned to the 1st Marine Division, holds an Iraqi child in central Iraq, March 29, 2003. REUTERS/Damir Sagolj

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. REUTERS/Damir Sagolj

Captain Christopher Fallon from Orlando, Florida, of the 1st battalion of the 22nd regiment of the fourth division of the U.S. army plays baseball in one of the palaces of the ousted Iraqi dictator Saddam Hussein in Tikrit, September 16, 2003....more

President George W. Bush delivers a speech to crew aboard the aircraft carrier USS Abraham Lincoln, declaring combat operations in Iraq over, as the carrier steams toward San Diego, California, May 1, 2003. REUTERS/Larry Downing

A soldier of U.S. Army's 4th Infantry Division (Task Force Ironhorse) searches through dense vegetation around the Diala river where Iraqi militants are hiding outside Baquba, November 13, 2003. REUTERS/Damir Sagolj

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. REUTERS/Erik de Castro

An Iraqi National Guardsman is comforted by soldiers after a colleague was killed in a gunfight with insurgents in Baghdad, July 7, 2004. REUTERS/Zohra Bensemra

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

A frame grab taken from website video May 2004 footage shows a man, who identified himself as Nick Berg of Philadelphia seated in front of his five masked captors moments before he was executed. REUTERS/Reuters TV

U.S. Marines kick in a door while securing a building next to the main hospital in central Baghdad, which will be used as a temporary Iraqi police headquarters, April 15, 2003. REUTERS/Jerry Lampen

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 Iraqi police in Tikrit, September 29, 2003. REUTERS/Arko Datta

A row of U.S. Army helmets are perched on M-16 rifles during a memorial for the 15 victims of a Chinook helicopter which was shot down by insurgents, at Al Asad air base, November 6, 2003.  REUTERS/Chris Helgren

U.S. Marine platoon Gunnery Sergeant, Ryan P. Shane (C), from the 1st Battalion of the 8th Marine Regiment and another member of 1/8 pull a fatally wounded comrade to safety while under fire during a military operation in Falluja, December 17, 2004....more

A bloodied insurgent sits blindfolded in an Iraqi police station after being captured during a morning battle in the southwestern Al-Bayaa district of Baghdad, June 20, 2005. Police, U.S. forces, and Iraqi interior ministry forces surrounded the area...more

Mays, a young Iraqi Shi'ite girl, cries after a mortar shell which landed outside the family's home in a Najaf residential area injured her uncle, August 18, 2004. REUTERS/Ali Jasim

A man looks at his wife and baby as he is searched by U.S. Army soldiers from the 10th Mountain Division at a traffic checkpoint in Baghdad, March 15, 2005. REUTERS/Bob Strong

A man looks at the shattered windshield of a car after a bomb attack outside a Sunni mosque in Baghdad, July 7, 2006. REUTERS/Ceerwan Aziz

A man runs down a street  warning people to flee shortly after a twin car bomb attack at Shorja market in Baghdad, February 12, 2007.  REUTERS/Ceerwan Aziz

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

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. REUTERS/Jorge Silva

British soldier jumps from a burning tank which was set ablaze after a shooting incident in the southern Iraqi city of Basra, September 19, 2005. Angry crowds attacked the tank with petrol bombs and rocks after Iraqi authorities said they had...more

A U.S. helicopter patrols the area around Baghdad, November 8, 2005. REUTERS/Gleb Garanich

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

U.S. soldiers blindfold an Iraqi man after arresting him during a night patrol at the Zafraniya neighborhood, southeast of Baghdad, September 4, 2007. REUTERS/Carlos Barria

An Iraqi man holds the body of a boy after a car bomb explosion at a market in the neighborhood known as New Baghdad, southeast of Baghdad, February 18, 2007. REUTERS/Carlos Barria

An Iraqi man unbuttons his shirt as U.S. soldiers point their laser sights on him during an operation near the Baiji oil refinery, December 24, 2007. REUTERS/Bob Strong

Former Iraqi President Saddam Hussein argues with prosecutors while testifying during cross-examination at his trial in Baghdad's Green Zone, April 5, 2006. REUTERS/David Furst/Pool

A U.S. soldier displays the picture of the dead Al Qaeda leader in Iraq, Abu Musab al-Zarqawi, during a news conference at the fortified Green Zone in Baghdad, June 8, 2006. REUTERS/Ceerwan Aziz

Footage from Al Iraqiya television shows masked executioners putting a noose around former Iraqi President Saddam Hussein's neck moments before his hanging in Baghdad, December 30, 2006. Saddam was hanged for crimes against humanity, a dramatic,...more

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

An Iraqi man holds his hands up as U.S. soldiers and Iraqi special police search his house for weapons in Baquba, in Diyala province, northeast of Baghdad, October 26, 2008. REUTERS/Goran Tomasevic

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

An Iraqi police officer checks a donkey, pulling a disabled man on a cart, before allowing it to enter a polling station in the country's second largest city of Basra, January 30, 2005. REUTERS/Atef Hassan

A girl looks at a local resident manning a machinegun at a checkpoint in Baghdad's Adhamiya Sunni neighborhood, November 12, 2007.  REUTERS/Stringer

An Iraqi baby lies in a cradle while a woman argues with U.S. soldiers of 1/8 Bravo Company searching for weapons, explosives and information about militants in the area during a foot patrol in a neighbourhood of Mosul, June 26, 2008. REUTERS/Eduardo...more

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

Sgt. Joseph Crandell of the U.S. 1st Armored Divison holds his seven month old daughter Lena for the first time as he hugs his wife Layla during a welcome home ceremony at the home base in Wiesbaden, Germany, November 25, 2008. The soldiers were...more

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

A soldier of the Iraqi army elite mobile 3rd Brigade 1st Division holds a ladder for his comrade at an abandoned shopping mall serving as their base in Baghdad, July 6, 2008. REUTERS/Damir Sagolj

U.S. soldiers stand near the Swords of Qadisiyah monument in Baghdad, March 13, 2008. REUTERS/Ceerwan Aziz

An Iraqi woman reacts as men are taken out of a house and detained by U.S. soldiers of the 2nd Brigade, 1st Armour Division and Iraqi soldiers during a joint military operation in Baghdad's Sadr City, July 12, 2008.  REUTERS/Damir Sagolj

A resident gestures as he talks to a U.S. soldier from 2nd Brigade combat team, 82nd Airborne on patrol in Baghdad's Adhamiya district, January 5, 2008.     REUTERS/Mahmoud Raouf Mahmoud

A U.S. soldier waves to residents at the newly-opened Mithaq swimming pool in Baghdad's Sadr City, August 30, 2008. REUTERS/ Thaier al-Sudani

Iraqi soldiers look at a former colleague as he runs with a new prosthetic leg during the opening of an Iraqi military hospital in Baghdad, January 19, 2009. REUTERS/Mohammed Ameen

Laura Youngblood, widow of U.S. Navy Petty Officer Travis L. Youngblood, touches his grave stone while visiting his grave in Section 60 of Arlington National Cemetery during Memorial Day weekend in Arlington, Virginia, May 24, 2009. Youngblood died...more

Residents mourn as they wait to claim bodies of bomb attack victims outside a morgue in Baghdad, August 17, 2010.   REUTERS/Saad Shalash

An Iraqi boy is taken away from a suspected militant, who has been accused of killing his father at the height of the sectarian slaughter in 2006-07, at the Interior Ministry in Baghdad, November 21, 2011. A total of 22 suspected militants were...more

A line of Strykers convoy as part of the 4th Stryker Brigade Combat Team, 2nd Infantry Division's last patrol through Iraq, as they leave for Kuwait, in the early hours of August 16, 2010. REUTERS/U.S. Army/Sgt. Kimberly Johnson

U.S. Air Force Major Stacie Shafran carries her luggage to a loading paddock while waiting for her departure from Iraq at the former U.S. Sather Air Base near Baghdad, December 14, 2011. REUTERS/Shannon Stapleton