International emotional resonance: Explaining transatlantic economic sanctions against Russia

Why did transatlantic policymakers target Russia with economic sanctions in response to its actions during the Ukraine conflict? Commentators perceived these sanctions as highly unlikely because they would have high costs for several European countries, and were surprised when they were finally adopted. Constructivist scholars employed explanations based on common norms and trust to explain the European Union's agreement on economic sanctions in this case. I argue that the mechanism of international emotional resonance played a decisive role in altering the course of the United States and core European Union powers' cooperation. A framework that combines resonance with emotional influence mechanisms of persuasion and contagion explains the precise timing of the policy shift, why European policymakers accepted sanctions at a substantial cost to their economy and how norms affected policy when they were empowered by intense emotions.