International environmental agreements have had varying success in the past; the theoretical literature on international environmental agreements (IEAs) explains why freeriding is so common. This paper allows for two strategically different types of countries. Damage functions are concave for...

Policy advocates frequently request for unilateral action to push forward climate protection in international negotiations. It is yet conventional wisdom in environmental economics that unilateral action does not pay for the first mover due to free-riding behavior of the other countries. How...