The Curse of the Shiny Object, 2017. Washington DC: National Defense University.
How Financial Power can be used to Save Iconic Species, 2015. Editorial in Business Insider.
Traffickers and Truckers: Illicit Afghan and Pakistani Power Structures with a Shadowy but Influential Role, 2017. Washington DC: PRISM.
Haqqani Network Financing: The Evolution of an Industry, 2012. West Point: Combating Terrorism Center.
“The Afghan Insurgency and Organized Crime,” 2011, in The Rule of Law, Missing in Inaction. Edited by Whit Mason. New York: Cambridge University Press.
Crime and Insurgency in Afghanistan and Pakistan, 2010. West Point: Combating Terrorism Center.
Seeds of Terror, 2009, New York: St Martin’s Press; New Delhi: Hachette. 2010, New York: Picador.
“How Opium Profits the Taliban,” 2009. Washington DC: The United States Institute of Peace.
“The Taliban and the Opium Trade,” 2009, in Decoding the New Taliban. Edited by Antonio Giustozzi. London: Hurst and Company.
“Take the War to the Drug Lords,” May 2009. Editorial in The New York Times.
“Straight Outta Kandahar,” August 2010. Editorial in Foreign Policy.