This paper overviews theoretical and empirical contributions that study political borders from an economic perspective. It reviews theories of the number and size of nations focused on the trade-off between economies of scale in public-good provision and heterogeneity of preferences over public...

This paper investigates the determinants of the different forms taken by regional integration in different parts of the world. This raises the issue of the relationship between economic and political integration. The theoretical model shows that, in an insecure world, the interplays between...

This paper analyses the case of a local secession, i.e. the birth of a new local jurisdiction by separation from an existing one. We present a stylized model in which society is composed of heterogeneous groups and individuals have an homophily bias. The model predicts that: i) separations, such...

This study shows that the level of corruption matters in how oil rents affect the military spending within countries. Using panel data covering the 1984–2014 period for the Middle East and North Africa countries, we find that the effect of oil rents on military budget depends on the extent of...

This paper argues that the number of deaths in a conflict can be a measure of duration and demonstrates that there are information gains to this approach. The well-known conflict database of International Peace Research Institute is compared with the database of Center for Systemic Peace which...

The paper addresses the following questions: what type of crisis is this? How can we put the events together in our minds so that we have a coherent, complete picture of the crisis? How can we put this crisis in its historical context and what are the consequences for the future of our society?...