Is Afghanistan a lost cause?

U.S. Marine in Afghanistan
A U.S. Marine helps provide security as a U.S. Army flight medic with Task Force Pegasus evacuates two Marine casualties from the battlefield, in Marjah, Helmand province, southern Afghanistan, Monday Feb. 15, 2010.
AP Photo/Brennan Linsley

Nine years in, what have we accomplished in Afghanistan? Has the surge failed, or does it need time to take its course? An "Intelligence Squared" debate features two panelists for, and two panelists against, the proposition: Afghanistan is a lost cause.