We use response curves in a repeated game to analyze key aspects of mutual deterrence: escalation, de-escalation, incomplete deterrence, and deterrence by denial. In this approach, episodes of violence are due to interacting response curves, which disincentivize opponents from attacking through...

The last two centuries witnessed the rise and fall of empires. We construct a model which rationalises this in terms of the changing trade gains from empires. In the model, empires are arrangements that reduce trade cost between an industrial metropole and the agricultural periphery. During...

As millions of soldiers deployed to Iraq or Afghanistan between 2001 and 2021, Veteran Affairs Disability Compensation payments quadrupled and the veteran suicide rate rose rapidly. We estimate causal effects of combat deployments on soldiers' well-being. To eliminate non-random selection into...

We investigate the event-based geopolitical shocks from the Russian invasion of Ukraine on selected agricultural and energy commodities using daily event-based structural vector autoregression (SVAR). We find that the geopolitical shock affects the markets of wheat (3%) and European natural gas...

This paper analyzes frameworks for the design of the rules for international trading, assuming that it is possible to have some rule of law. In the Arrow-Debreu benchmark, where there is no economic power and political power is seemingly irrelevant, there is no need for trade agreements - free...

This paper examines the evolving policy landscape surrounding foreign investment restrictions in innovative startups. Drawing on recent research, we analyze both the security benefits and economic costs of policies like the Foreign Investment Risk Review Modernization Act (FIRRMA). The evidence...

This paper studies how innovation reacts to foreign political risk and shapes its economic consequences. In a model with foreign political shocks that can disrupt the supply of foreign inputs, we show that greater political risk abroad increases domestic innovation, thereby lowering reliance on...