US presidents used military force 212 times from 1948 to 1998. In 45 of these cases, the force was embedded in a multilateral context. The article distinguishes between procedural multilateralism, where US military operations are endorsed by an international organization, and operational...

It is a puzzle that while academic research has increased in specialization, the important and complex problems facing humans urgently require a synthesis of understanding. This unique collaboration attempts to address such a problem by bringing together a host of prominent scholars from across...

This article aims to demonstrate that differences in the two major datasets can significantly affect the results of predictions of mass political killing. Mass political killing (such as Hitler's killing of some six million Jews, or the Rwanda genocide of 1994) has been studied for decades with...

The use of force is prohibited under the UN Charter. An exception is written in Article 51, which allows a state to conduct an act of self-defense. This study explains why only some states invoke it. The author claims that the baseline probability of claiming the right remains low because...

This edited volume is an outcome of the first major collaborative project between Japanese economists and political scientists, funded by the Japan Society for the Promotion of Science. The authors of the individual chapters show that Asian states play games of conflict and cooperation...