On Tuesday, President Obama ordered the deployment of an additional 17,000 combat troops in Afghanistan, citing a "deteriorating situation" that "demands urgent attention and swift action." More troops heading to the country raises questions about how exactly to define success in Afghanistan.
Craig Mullaney, served as an infantry officer in Afghanistan; author of The Unforgiving Minute: A Soldier's Education
Tom Bowman, Pentagon reporter for NPR
Rajan Menon, professor of international relations at Lehigh University