As America's longest war completes its tenth year, President Obama has promised a troop withdrawal from Afghanistan, starting next month. There is heated debate, not just on Capitol Hill but within the Administration, over how many troops should come home and how soon. Should America's "phased withdrawal" from Afghanistan begin next month with 3000 troops or 15,000? Is "counterinsurgency" counterproductive? We look at success, failure and possible change in the President's military and civilian strategies.