US forces are set to withdraw from their last bases in Iraq by September 30, ending more than two decades of war. This marks a symbolic victory for Iran and Michael Georgy warns the Islamic State could regain a foothold ▻ ↧ Joy mixed with fear as US forces quit Iraq leaving potential securi... Iraqis celebrated the departure of US forces after more than two decades of war, though many were worried that a security vacuum could increase the power of ‌Iran-backed militia or provide an opening for the return of Islamic State.