Updated

More than 23 years after the 2003 invasion, the United States has withdrawn its military forces from Iraq, ending a prolonged presence that followed the toppling of Saddam Hussein and years of insurgency and civil war. Iraq continues to grapple with significant Iranian influence despite the U.S. departure. Retired Lt. Gen. H.R. McMaster, who commanded American troops in Iraq, warned that the withdrawal could create openings for Iran and a resurgence of ISIS, reigniting debate over the long-term strategic consequences of ending the U.S. military role in the country.