We analyze the causal effect of the stock of foreigners residing in a country on the probability of a terrorist attack in that country. Our instrument for the stock of foreigners relies on the interactions of two sets of variables. Variation across host-origin-dyads results from structural...

This paper studies how an increase in the number of armed groups operating within an area affects the amount of organized political violence. We use plausible exogenous variation in the number of armed groups in Pakistan, by exploiting the split of a major group due to the natural death of its...

This paper studies how an increase in the number of armed groups operating within an area affects the amount of organized political violence. We use plausible exogenous variation in the number of armed groups in Pakistan, by exploiting the split of a major group due to the natural death of its...

We investigate whether the stock of foreigners residing in a country leads to a larger number of terrorist attacks on that country. Our instrument for the stock of foreigners relies on the interaction of two sets of variables. Variation across host-origin-dyads results from structural...

What are the main causes of international terrorism? The lessons from the surge of academic research that followed 9/11 remain elusive. The careful investigation of the relative roles of economic and political conditions did little to change the fact that existing econometric estimates diverge...

The paper analyzes whether the political regime of a country influences its involvement in international trade. Firstly, we develop a theoretical model that predicts that autocracies trade less than democracies. Secondly, we test the predictions of the model empirically using a panel of more...

The paper presents a political economy model linking terror and governments' respect for human rights. Using panel data for 111 countries over the period 1973-2002, we then empirically analyze whether and to what extent terror affects human rights - measured by three indices covering a wide...