PAUL REXTON KAN is the Henry L. Stimson Chair of Military Studies at the Army War College, where he is an associate professor of national security studies. He is the author of "Drugs and Contemporary Warfare" (Potomac Books, 2009). His work has been routinely featured in the journal "Small Wars and Insurgencies" and has been cited in publications ranging from "Foreign Policy" to "Forbes". Born in Hong Kong and raised in Hawaii and Australia, he now lives in Carlisle, Pennsylvania.