Dual Use Deception: How Technology Shapes Cooperation in International Relations

Almost all technology is dual use to some degree: it has both civilian and military applications. This feature creates a dilemma for cooperation. States can design arms control institutions to curtail costly competition over some military technology. But they also do not want to limit valuable civilian uses. How does the dual use nature of technology shape the prospects for cooperation? We argue that the duality of technology presents a challenge not by its very existence but rather through the ways it alters information constraints on the design of arms control institutions. We characterize variation in technology along two dual use dimensions: (1) the ease of distinguishing military from civilian uses; and (2) the degree of integration within military enterprises and the civilian economy. Distinguishability drives the level of monitoring needed to detect violations. When a weapon is indistinguishable from its civilian counterpart, states must improve detection though intelligence collection or intrusive inspections. Integration sharpens the costs of disclosing information to another state. For highly integrated technology, demonstrating compliance could expose information about other capabilities, increasing the security risks from espionage. Together, these dimensions generate expectations about the specific information problems states face as they try to devise agreements over various technologies. We introduce a new qualitative data set to assess both variables and their impact on cooperation across all modern armament technologies. The findings lend strong support for the theory. Efforts to control emerging technologies should consider how variation in the dual use attributes shapes this tension between detection and disclosure.