ABSTRACT
In this chapter, the authors first concentrate on trying to learn what agreements people might reach when any and all agreements are somehow enforceable. Later they turn their attention to situations in which the subject of enforcement cannot be divorced from the study of potential coalitional agreements. A coalition corresponds to an agreement on the part of two or more players to coordinate their actions so as to bring about an outcome that is more advantageous to members of the coalition than the outcome that prevails from uncoordinated action. The concept of a coalition encompasses a great many things in politics, and studying them includes studying the processes whereby governments are formed and prime ministers are chosen in Parliaments, alliances are formed and maintained in international affairs, and legislators maneuver together in order to pass mutually beneficial legislation.
