Stephen Troell was killed to avenge the death of Iranian general Qassem Soleimani in a drone strike, prosecutors said.

Two U.S. service members were injured overnight in a raid in Iraq that targeted top ISIS leaders and killed "multiple" ISIS operatives, the Pentagon said Tuesday.

A memorial to fallen journalists killed during the war to remove Saddam Hussein from power in Iraq was inaugurated in the northern Iraqi city of Sulaymaniyah.

U.S. and Iraq announce end of anti-ISIS coalition troop presence in Iraq could mean significant troop reduction in Iraq.

Seven U.S. personnel injured in Iraq raid that killed 15 ISIS members, officials said.

A "post-attack damage assessment" was being conducted, a spokesperson said.

The U.S. military conducted a defensive airstrike south of Baghdad, Iraq, on Tuesday, according to two U.S. officials.

The U.S. carried out an airstrike in Baghdad on Wednesday targeting a leader of an Iran-backed militia in Iraq that was blamed for attacks on U.S. forces

Some 2,500 U.S. troops remain inside Iraq to counter ISIS, Iran-backed militias.

U.S. personnel suffered brain injuries in a ballistic missile attack Sunday.

A large missile barrage on a U.S. base in Iraq has left some U.S. personnel being evaluated for traumatic brain injuries, officials said.

U.S. officials condemned the strikes, saying that the "initial indications are that this was a reckless and imprecise set of strikes."

Several explosions were reported near the U.S. Consulate in Erbil, Iraq, an Iraqi security source told ABC News.

U.S. military forces carried out airstrikes on facilities in Iraq used by Kataib Hezbollah and its affiliates on Christmas night, the Department of Defense said.

ABC News’ Bob Woodruff has dreamed of revisiting the country where he nearly lost everything.

Attacks on American troops in Middle East continue.

Fire expert highlights safety issues that led to deadly Iraq wedding blaze, as government investigation angers often-neglected region of Ninevah

Elizabeth Tsurkov, an Israeli-Russian dual citizen and Princeton University graduate student, has been held captive for months by an Iran-linked Shiite militia in Iraq.

Rep. Dan Crenshaw and Sen. Tammy Duckworth reflect on their military service in Iraq on the 20th anniversary of the U.S. invasion there

"It really bothers me that they threw me away that way," he told ABC News.

Veterans reflect on their Iraq War deployments 20 years later.

Byron Pitts spoke with retired four-star General David Petraeus about the 20th anniversary of the invasion of Iraq.

An American aid worker was gunned down in Baghdad on Monday, officials said.

The U.S. Embassy and other parts of the Green Zone in Baghdad were attacked by "terrorist groups" Thursday.

In a historic bipartisan move, a Senate panel has voted to scrap both Iraq war authorizations.

President Joe Biden said the U.S. is "not going to be, by the end of the year, in a combat mission" in Iraq.

A Pentagon spokesperson has confirmed that two U.S. military service members were injured in a rocket attack on al-Asad air base in western Iraq earlier Wednesday.

A catastrophic fire in a hospital in Iraq has killed dozens of patients who were being treated there.

The Moussa family was once taken captive by the caliphate. Two sisters in Mosul injured when they were used as human shields are still recovering.

Amid rocket attacks, U.S. diplomats in Baghdad have been hit with pay cut, and may require be forced to pay some money back for personal time off.

Defense Secretary Lloyd Austin told ABC's "This Week" co-anchor Martha Raddatz the U.S. is still assessing who was behind the Iraq rocket attack and how to respond.

A rocket attack targeting the American-led military coalition in the northern Iraqi city of Erbil killed a civilian contractor and wounded nine others on Monday night.

The new acting defense secretary has announced American troop reductions in Afghanistan and Iraq that will leave 2,500 troops in each country by mid-January.

U.S. military reducing troops in Iraq to 3,000 in September, a larger reduction in a faster timeline than had been expected.

The U.S. is reducing its troop level in Iraq to 3,500 from 5,200.

Gen. McKenzie met with new Iraqi Prime Minister in Baghdad

The U.S. military conducted airstrikes in Iraq on Thursday in retaliation for a recent rocket attack that killed two American service members.

Two American service members and one British service member were killed in a rocket attack on a base in Iraq on Wednesday.

Three American service members were among the wounded in a new rocket attack on Camp Taji in Iraq.

Two American troops were killed in Iraq on Sunday during an anti-ISIS mission, a deadly reminder of the terror group's ongoing presence there.