From the International Crisis Group, Robert Malley and Peter Harling:
To imagine what Baghdad will look like after the surge, there is no need to project far into the future. Instead, just turn to the recent past. Between September 2006 and March 2007, British forces conducted Operation Sinbad in Basra, Iraq’s second largest city. At first, there were signs of progress: diminished violence, criminality, and overall chaos. But these turned out to be superficial and depressingly fleeting. Only a few months after the operation came to an end, old habits resurfaced. Today, political tensions once again are destabilizing the city; relentless attacks against British forces have driven them off the streets; and the southern city is under the control of militias, more powerful and less inhibited than before.
Here.