Academics and policymakers from the realist, liberal, and constructivist schools of thought debate the motivations of Russian foreign policy. Andrei Tsygankov in his latest book The Dark Double: US Media, Russia, and the Politics of Values makes the argument that the tension between the U.S. and Russia is the result of historical, cultural, and political differences. The book analyzes how U.S. media presents Russia as a “dark double” and a villain in the international system. According to Tsygankov, the U.S.-Russian relationship is an example of how negative perceptions of the other can lead to competitiveness. He expresses concern that cooperation between the two powers is unlikely until both recognize and respect their differences.