A rapid withdrawal of all U.S. troops would hurt America's image and hand al Qaeda and other terror groups a propaganda victory that the United States is only a "paper tiger," CNN terrorism analyst Peter Bergen said.
"It would also play into their strategy, which is to create a mini-state somewhere in the Middle East where they can reorganize along the lines of what they did in Afghanistan in the late '90s," Bergen told CNN.com.
It was in Afghanistan where Osama bin Laden and al Qaeda allied with the Taliban, and were allowed to run terror bases and plan the September 11, 2001 attacks against the United States.
Bergen says it is imperative that the United States not let that happen in Iraq.
"What we must prevent is central/western Iraq [from] becoming a Sunni militant state that threatens our interests directly as an international terror hub," he said.
Don Shepperd, a retired Air Force major-general and military analyst for CNN, agreed that Sunni Muslim fighters who support al Qaeda would seek an enclave inside a lawless Iraq likely riven along sectarian lines into Shiite, Sunni and Kurdish regions.
There would be "increasing attempts by terrorists to establish a training sanctuary in Iraq," Shepperd said.
That's one of the reasons why a fast withdrawal will not happen, whatever the politicians say, the analysts predict.
"Everyone wants the troops home -- the Iraqis, the U.S., the world -- but no one wants a precipitous withdrawal that produces a civil war, a bloodbath, nor a wider war in an unstable Mideast," Shepperd said, adding that the image of the United States was important too.
"And we do not want a U.S that is perceived as having been badly defeated in the global war on terror or as an unreliable future ally or coalition partner."