Are the best international agreements products of mutual understanding? The conventional wisdom in economics, sociology, and political science is that accurate perceptions of others' interests, beliefs, and ideologies promote cooperation. Obstacles to international cooperation therefore emerge from misperception and misunderstanding. In Constructive Illusions, Eric Grynaviski challenges this conventional wisdom by arguing that when nations wrongly believe they share a mutual understanding, international cooperation is actually more likely, and more productive, than if they had a genuine understanding of each other's position. Mutual understanding can lead to breakdowns in cooperation by revealing intractable conflicts of interest, identity, and ideology. Incorrectly assuming a mutual understanding exists, in contrast, can enhance cooperation by making |