International bargaining with two-sided domestic constraints

Putnam revived interest in the "Schelling conjecture" that in international bargaining, a domestic ratification constraint provides a negotiator with a bargaining advantage. However, existing formal analyses of the Schelling conjecture generally allow only one side in the bargaining to be constraine d. In this article, a model is analyzed in which both negotiators are const rained. A generalized version of the Schelling conjecture holds that if one negotiator's constraint is high and the other's is only low or medium, the former gets a better deal than if neither side were constrained, and the l atter is worse off. With incomplete information, however, the complete oppo site of what the Schelling conjecture predicts can occur, and there is an e quilibrium in which delay in reaching an agreement results in both sides be ing worse off than if neither side were constrained. Incomplete information can but does not always completely eliminate the advantage of having a hig h constraint.