Research and Data


Taxing Wars: The American Way of War Finance and the Decline of Democracy (Oxford University Press, 2018).

Drones: What Everyone Needs to Know (Oxford University Press, 2016).

Drone Warfare (New York, NY: Polity Press, 2014) (with John Kaag).

** Winner of Choice Outstanding Academic Title Award 2015 **

Coalitions of Convenience:  United States Military Interventions after the Cold War (New York, NY: Oxford University Press, 2011)

Peer-Reviewed Articles

“Hawks, Doves, and Arms Control” (with Elizabeth Saunders and Kenneth Schultz), forthcoming, World Politics.

“Mechanisms of Morality: Sources of Public Support for U.S.-Led Humanitarian Intervention” (with Sarah Maxey), forthcoming, Journal of Conflict Resolution.

“The Institutional Design of Arms Control Agreements,” forthcoming at Foreign Policy Analysis

“Borrowing Support for War: The Effect of War Finance on Public Attitudes toward Conflict,” forthcoming at the Journal of Conflict Resolution (with Gustavo Flores-Macias).

“The Consequences of Drone Proliferation: Separating Fact from Fiction,” International Security, Vol 41, No. 2 (Fall 2016), 7-42  (with Michael Horowitz and Matthew Fuhrmann).

“International Law, Military Effectiveness, and Public Support for Drone Strikes,” Journal of Peace Research, Vol 53, No. 6 (2016) (with Geoffrey Wallace).

“Flying Under the Radar: A Study of Public attitudes towards Unmanned Aerial Vehicles.” 2014. Research and Politics 1 (1).

“Political Parties at War: A Study of American War Finance, 1789-2010,” American Political Science Review, Vol. 107, No. 4 (November 2013), 833-848 (with Gustavo Flores-Macias).
[Data and Code]
[Online Appendix]

“Drones and Democratic Peace,” Brown Journal of World Affairs, Vol. 19, No. 2 (Spring/Summer 2013). (with John Kaag)

“The Foreign Policy Consequences of China’s Economic Rise: A Study of China’s Commercial Relations with Africa and Latin America, 1992-2006,” Journal of Politics, Vol 75, No. 2 (April 2013), 357-371 (with Gustavo Flores-Macias).

“The Use of Unmanned Aerial Vehicles in Asymmetric Conflict: Legal and Moral Implications,” Polity, Vol. 44, No.2 (July 2012), 260-285 (with John Kaag).

“Attacking the Atom: Does Bombing Nuclear Facilities Affect Proliferation?”Journal of Strategic Studies, Vol. 32, No. 2 (April 2011), 161-187 (with Matthew Fuhrmann).

“Targeting Nuclear Programs in War and Peace: A Quantitative Empirical Analysis, 1941-2000,” Journal of Conflict Resolution, Vol 54, No. 6 (2010), 831-859 (with Matthew Fuhrmann).

“Elite Consensus as a Determinant of Alliance Cohesion: Why Public Opinion Hardly Matters for NATO-Led Operations in Afghanistan,” Foreign Policy Analysis, Vol. 6, No. 3 (July 2010), 191-215.

“American Grand Strategy after Iraq,” Orbis, Vol. 53, No. 4 (Autumn 2009), 629-645.

“Multilateral Military Interventions: Theory and Practice,” Political Science Quarterly, Vol. 123, No. 4 (Winter 2008-09), 573-603.

“Shifting Currents: Changes in National Intelligence Estimates on the Iran Nuclear Threat,” Intelligence and National Security, Vol. 23, No. 5 (Oct 2008), 608-628.

“When Does the Mission Determine the Coalition? The Logic of Multilateral Intervention and the Case of Afghanistan,” Security Studies, Vol 17, No. 3 (Fall 2008), 531-567.

“The UN-African Union Mission in Darfur: Implications and Prospects for Success,” African Security Review, Vol. 16, No.4 (Winter 2007), 66-79.

“Unilateralism in Multilateral Clothes: The 1994 Haiti Intervention,”
 The Journal of Strategic Studies, Vol. 30, No.3 (June 2007), 449-474.

“The 2006 Lebanon War: Lessons Learned,” Parameters, Vol.37, No.1 (Spring 2007), 72-84.

“Why States Follow the Rules: Toward a Positional Theory of Adherence to International Regimes,” Duke Journal of Comparative and International Law, Vol. 16. No.2 (Spring/Summer 2006), pp.331-414 (co-authored with Anthony Arend)


Working Papers/Under Review

“Moral Codes and Wartime Calculus: Assessing Public Attitudes about Civilian Casualties” (with Stephen Roblin).

“Warring from the Virtual to the Real: Assessing the Public’s Threshold for War on Cyber Security,” under review (with Debak Das).


Selected Other Publications

Limiting Armed Drone Proliferation, Council on Foreign Relations Special Report, 2014.

“The Next Drone Wars: Preparing for Proliferation,” Foreign Affairs, March/April 2014, pp. 68-79 (with Micah Zenko).

“The Drone Invasion Has Been Greatly Exaggerated,” Foreign Policy, 10 March 2014 (with Micah Zenko).

“Ground the Drones? The Real Problem with Unmanned Aircraft”, 4 December 2013.

“Roundtable on Coalitions of Convenience,” H-Diplo, Vol 4, No. 7 (2012).

“A Murky Standard with High Stakes,” Non-Proliferation Review, Vol 19, No. 3 (2012): 349-355.

“Review of Threat on the Horizon: An Inside Account of America’s Search for Security after the Cold War,” H-Diplo, Vol 3, No. 12 (2012).

“Review of The Limits of US Military Capability: Lessons from Vietnam and IraqH-Diplo, Vol 2, No. 9 (2011).

“Targeting Nuclear Programs in War and Peace,” Discussion Paper Paper 2009-11, Belfer Center for Science and International Affairs, Harvard Kennedy School (co-authored with Matthew Fuhrmann)

“Review of American Foreign Policy and the Politics of Fear: Threat Inflation Since 9/11,” Perspectives on Politics, Vol 9, No. 2 (June 2011), 492-493.

“Review of Iraq and the Evolution of American Strategy,” Political Science Quarterly, Vol 125, No. 4 (Winter 2010-2011).