This study estimates the effect of deployment location and length on the risk of developing PTSD, relative to what it would be from the normal military operations. We use a random sample of activity-duty enlisted personnel serving between 2001 and 2006. We identify PTSD cases from TRICARE...

We survey a representative sample of the U.S. population to understand stakeholders' desire to see their firms exit Russia after the invasion of Ukraine. 61% of respondents think that firms should exit Russia, regardless of the consequences. Only 37% think that leaving Russia is a purely...

The US trade war against China in 2018-2019 can either enhance or diminish the US soft power in China, depending on whether it is recognized as legitimate by Chinese citizens. We study how the viewership of US movies--an important element of the US soft power--is affected by the trade war,...

We exploit the recent declassification of CIA documents and examine whether there is evidence of US power being used to influence countries' decisions regarding international trade. We measure US influence using a newly constructed annual panel of CIA interventions aimed at installing and...

We study the impact of nationalism and interstate frictions on international economic relations by analyzing market reaction to adverse shocks to Sino-Japanese relations in 2005 and 2010. Japanese companies with high China exposure suffer relative declines during each event window; a symmetric...

We document an empirical relationship between the cross-country adoption of technologies and the degree of long-term historical relatedness between human populations. Historical relatedness is measured using genetic distance, a measure of the time since two populations' last common ancestors. We...

Data on global trade as well as capital and labor flows indicate a slowdown, but not reversal, of globalization post the 2008-09 financial crisis. Yet profound changes in the policy environment and public sentiment in the largest economies over the past five years suggest the beginning of a new...

In International Relations the canonical model of inter-estate interactions is a one-shot security competition game. The model has the structure of a prisoners dilemma, which results in an equilibrium with two sources of inefficiency: excessive arming and possibly the destruction associated with...

We present an economic rationale for countries resorting to foreign influence to export their ideology to other nations. Our model incorporates two fundamental elements: redistribution of the tax burden between capital owners and workers, and international capital mobility. The model highlights...