US forces have completed their withdrawal from Iraq after a two-decade military presence, marking the end of a prolonged engagement that began in 2003. The exit, finalized in late September 2026, follows years of declining troop levels and shifting security dynamics in the region. The withdrawal leaves a significant security vacuum that analysts warn could be exploited by Iran-backed groups seeking to expand influence across Iraq.

Iraqi officials have expressed concern over the potential resurgence of militia activity and the challenges of maintaining internal stability without US support. The move reflects broader US strategic realignments in the Middle East, prioritizing reduced overseas commitments amid domestic and global pressures. While the Biden administration framed the exit as a responsible conclusion to a long chapter, critics argue it risks undermining hard-won gains and emboldening adversaries.

The departure concludes one of America’s longest military campaigns since Vietnam, with over 4,000 US service members lost and hundreds of billions spent during the conflict. Regional powers, including Iran and Saudi Arabia, are now positioning to fill the void left by the US departure.