Iraq's former war planners have urged the US to keep military forces in the country once Islamic State (IS) militants are defeated.
According to Washington Times, US sent military trainers and advisers to Baghdad in mid-2014 to fight IS militants in northern and western Iraq.
Washington launched an air war was with hundreds of jet fighters and drones in the Iraqi capital, Baghdad.
Retired Army Gen. Jack Keane, an architect of the 2007 troop surge credited with defeating al Qaeda in Iraq said that Iraq needs a force to continue to train, assist and advise the Iraqi army.
The recapture of Iraqi city of Tikrit from IS militants by government forces also showed the benefit US air power.