In this paper we extend the well known "agreeing-to-disagree" and "no-trade" results from economics and game theory to international relations. We show that two rational countries should never agree to go to war when war is inefficient and when rationality is common knowledge. We argue that this...

Ex post review is a common feature of policymaking institutions. We consider a simple environment in which an expert agent makes a policy recommendation, which can then be accepted or rejected by a principal whose policy goals differ from those of the agent. The theory offers testable...