http://gametheory101.com/courses/international-relations-101/ Under what conditions will two states cooperate even without a police force to deter conflict? This unit investigates the temptations and incentives for spontaneous cooperation. In the next few videos, we will cover the following: -The prisoner's dilemma -The Cult of the Offensive and the origins of World War I -Arms races and arms treaties -Tariffs and free trade policy -The Evolution of Cooperation -Trench warfare during World War I