I am a visiting fellow at the Weatherhead Center for International Affairs at Harvard University. I have a Ph.D. in politics from New York University. My primary areas of research include economic sanctions and civil conflict.


Peer-Reviewed Publications


HIV/AIDS, Life Expectancy, and the Opportunity Cost Model of Civil War

Journal of Conflict Resolution, 2017

This paper finds that declines in life expectancy decrease the opportunity cost of dying in combat, thereby increasing the probability of civil war. Expand abstract »

This paper views death in battle as an opportunity cost whose size is determined by the number of years a rebel would have lived as a civilian. As civilian life expectancy declines, this opportunity cost does too, increasing the probability of rebellion. The theory is tested with a tragic natural experiment: the HIV/AIDS epidemic in sub-Saharan Africa. Using male circumcision rates as an instrument for life expectancy, the analysis shows that a one-year increase in life expectancy decreases the probability of civil war by 2.6 percentage points. This supports the theory that opportunity costs are important determinants of conflict onset and that non-pecuniary opportunity costs should be taken into account. The paper concludes by noting that cost-benefit analyses of public health interventions should include decreases in the probability of civil war, and the attendant benefits in terms of lives saved and material damage prevented, in their calculations.
Gated version | Ungated version | Online appendix | Replication files



Economic Considerations in Designing Emergency Management Institutions and Policies for Transboundary Disasters

Public Management Review, 2013 with Adam Rose

This article provides an economic framework for designing transboundary emergency management institutions and policies to address transboundary crises. Expand abstract »

An increasing number of disasters are generating consequences that extend beyond political boundaries. This article provides an economic framework for designing transboundary emergency management institutions and policies to address these transboundary crises. It emphasizes the importance of economic considerations in two ways. First, we disaggregate economic losses into direct and indirect components, which vary in terms of their transboundary potential. Second, we apply economic principles such as scale economies, externalities and public goods in analysing European cooperation in emergency management. The article concludes by identifying the type of consequences that might best be addressed by a wider geographic and political authority.
Gated version

Working Papers


Sanctioning the Homeland: Diasporas’ Influence on American Economic Sanctions Policy

This paper examines how diasporas affect American sanctions policy and then uses diasporas' size as an instrumental variable to calculate causal estimates of sanctions' effectiveness. Expand abstract »

Why do some immigrant groups succeed in getting the U.S. government to impose economic sanctions on their former dictators, while others do not? This paper begins by noting that the president is the pivotal player in sanctions policy and that presidents pander to voters in swing states. Therefore, the size of a diaspora's voting block in swing states should determine whether the American government imposes sanctions on their former homeland. Considering dictatorships from 1946 to 2005, this paper finds that a one-percentage-point increase in the size of a country's diaspora in swing states increases the probability of sanctions by 165 per cent. It then goes on to calculate causal estimates of the effectiveness of economic sanctions on regime change. Using the size of diasporas in swing states as an instrumental variable for the presence of economic sanctions, it finds that sanctions do not have a statistically-significant impact on regime change.
Working paper | Online appendix


Blog Posts




7 insights into the surprising results from the Canadian election The Monkey Cage, The Washington Post, Oct. 20, 2015


Here’s what to watch for when Canadians vote Monday The Monkey Cage, The Washington Post, Oct. 19, 2015