Iraqi army retakes Fallujah, what comes next?

Ten years ago retired US Army Colonel Anthony Dean was about to take charge of a battalion in the city of Ramadi. At the time coalition forces were still counting the cost of a bloody campaign to retake Fallujah from al Qaeda in Iraq, the group which eventually evolved into Islamic State, which went on to capture Fallujah again two years ago. Now the city has been liberated by the Iraqi Army. But Anthony Dean says the latest effort to take the city has failed to learn the lessons of previous efforts.