We analyze bargaining over international climate agreements in a setting with incomplete information about abatement costs. Unilateral commitment to high abatement reduces the gains from global cooperation. This reduces the probability of reaching efficient international environmental agreements.

When politicians negotiate in international climate conventions they may suffer from incomplete information about each other's preferences about reaching an agreement. As is known, this may cause failure to reach an efficient cooperative agreement. We study the role of the clean development...

This paper surveys some of the strategic aspects that emerge if players fight in an alliance against an enemy. The survey includes the free-rider problem and the hold-up problem that emerges in the baseline model, the role of super-modularity in alliance members' effort contributions, the role...