This study provides empirical support for recent theoretical models that allow for time-varying rare disaster risk. Using a unique database of 447 international political crises during the period 1918–2006, we create a crisis index that shows substantial variation over time. We show that...

This study provides empirical support for theoretical models that allow for time-varying rare disaster risk. Using a database of 447 international political crises during the period 1918-2006, we create a crisis index that shows substantial variation over time. Changes in this crisis index, our...