How do nationalistic media affect animosity between ethnic groups? We consider one of Europe's deadliest conflicts since WWII, the Serbo-Croatian conflict. We show that, after a decade of peace, cross-border nationalistic Serbian radio triggers ethnic hatred toward Serbs in Croatia. Mostly...

The conflict in Northern Ireland was an example of "complex warfare" with both insurgency and sectarian violence. We present a unified model that helps to identify these two forms of conflict from the spatial distribution of violence. The model predicts that tectonic boundaries between...

During the Greek debt crisis after 2010, the German government insisted on harsh austerity measures. This led to a rapid cooling of relations between the Greek and German governments. We compile a new index of public acrimony between Germany and Greece based on newspaper reports and internet...

During the Greek debt crisis after 2010, the German government insisted on harsh austerity measures. This led to a rapid cooling of relations between the Greek and German governments. We compile a new index of public acrimony between Germany and Greece based on newspaper reports and internet...

During the Greek debt crisis after 2010, the German government insisted on harsh austerity measures. This led to a rapid cooling of relations between the Greek and German governments. We compile a new index of public acrimony between Germany and Greece based on newspaper reports and internet...

Recent research on violence against civilians during wars has emphasized war-related factors over political ones. For example, factors such as control of territory or characteristics of the armed groups have been prioritized at the expense of factors such as ideological alignments or local...

During World War I the birth rate in France fell by 50%. Why? I build a model of fertility choices where the war implies a positive probability that a wife remains alone, a partially-compensated loss of a husband's income, and a temporary decline in productivity followed by faster growth. I...

During World War II, some 50,000 Finnish children were evacuated to Sweden and placed in foster families. The evacuation scheme limited sharply the scope for selection into foster care based on background characteristics. A first-come first-served policy was applied where the children were...

In this chapter we are addressing the numerous cases of government failures in countries with transit economies and weak democratic traditions when the state is called upon to provide “pure public goods” (defense, security, and justice). In other words, the subject matter of this chapter...