In this paper, we compared the models for selecting the optimal portfolio based on different risk measures to identify the periods in which some of the risk measures dominated over others. For decades, the best known return-risk model has been Markowitz's mean-variance model. Based on the...

This chapter presents the theory of international environmental agreements (IEAs). It explains what treaties do (or should do); when and why they succeed or fail; and whether they can be designed better. It focuses on the main questions that the literature on this topic has tried to answer,...

Peace economics can be defined as the use of economics to understand the causes and effects of violent conflict in the international system and the ways that conflict can be avoided, managed, or resolved. This chapter surveys major subject areas of peace economics, highlighting seminal as well...

Arms races – enduring rivalries between pairs of hostile powers, which prompt competitive acquisition of military capability – appear to be a pervasive phenomenon. From the past Cold War competition, between the US and the USSR, to present regional antagonisms, such as India and Pakistan,...

International economic sanctions have become increasingly important as alternatives to military conflict since the end of the Cold War. This chapter surveys various approaches to the study of economic sanctions in both the economics and international relations literatures. Sanctions may be...