By LOLITA C. BALDOR and TARA COPP Associated Press
Share this story

WASHINGTON — Twenty years after the U.S. invaded Iraq — in blinding explosions of shock and awe — American forces remain in the country in what has become a small but consistent presence to ensure an ongoing relationship with a key military and diplomatic partner in the Middle East.

The roughly 2,500 U.S. troops are scattered around the country, largely in military installations in Baghdad and in the north. And while it is a far cry from the more than 170,000 U.S. forces in Iraq at the peak of the war in 2007, U.S. officials say the limited — but continued — troop level is critical as a show of commitment to the region and a hedge against Iranian influence and weapons trafficking.

ADVERTISING

A look at America’s evolving role in Iraq:

HOW DID IT START?

The U.S. invaded Iraq in March 2003 in what it called a massive “shock and awe” bombing campaign that lit up the skies, laid waste to large sections of the country and paved the way for American ground troops to converge on Baghdad. The invasion was based on what turned out to be faulty claims that Saddam Hussein had secretly stashed weapons of mass destruction. Such weapons never materialized.

Saddam was toppled from power, and America’s war shifted the country’s governing base from minority Arab Sunnis to majority Shiites, with Kurds gaining their own autonomous region. While many Iraqis welcomed Saddam’s ouster, they were disappointed when the government failed to restore basic services and the ongoing battles instead brought vast humanitarian suffering.

Resentment and power struggles between the Shiites and the Sunnis fueled civil war, leading ultimately to America’s complete withdrawal in December 2011. The divide was a key factor in the collapse of the nation’s police and military forces when faced with the Islamic State insurgency that swept across Iraq and Syria in 2014.

THE U.S. RETURNS

The rise of the Islamic State group — its roots were in al-Qaida affiliates — and its expanding threat to the U.S. and allies across Europe sent the U.S. back into Iraq at the invitation of the Baghdad government in 2014. Over that summer and fall, the U.S.-led coalition launched airstrike campaigns in Iraq and then Syria, and restarted a broad effort to train and advise Iraq’s military.

The coalition’s train and advise mission has continued, bolstered by a NATO contingent, even after the Islamic State group’s campaign to create a caliphate was ended in March 2019.

The roughly 2,500 troops deployed to Iraq live on joint bases with Iraqi troops, where they provide training and equipment. That troop total, however, fluctuates a bit, and the Pentagon does not reveal the number of U.S. special operations forces that routinely move in and out of the country to assist Iraqi forces or travel into Syria for counterterrorism operations.

“Iraq is still under pressure from ISIS,” said retired Marine Corps Gen. Frank McKenzie, who led U.S. Central Command and served as the top U.S. commander for the Middle East from 2019 to 2022. “We still help them continue that fight. We’ve done a lot of things to help them improve the control of their own sovereignty, which is of very high importance to the Iraqis.”