As the Taliban and the United States sign a peace deal in Doha to end the 18-year old war in Afghanistan, what are the prospects for implementation including intra-Afghan negotiations and a conditions-based US troop withdrawal? Former US Ambassador to Afghanistan, Ronald Neumann, now President of the American Academy of Diplomacy, and Scott Worden, Director of Afghanistan and Central Asia Programs at the U.S. Institute of Peace, discuss the perils and promises with host Carol Castiel.