Over the weekend, European Commission President Ursula von der Leyen announced that Europe had developed “pretty precise plans” for military deployments to guarantee Ukraine’s security after a peace deal. “We have a clear road map,” von der Leyen told the Financial Times. “This work is going forward very well.” Other European leaders appear to disagree. On Monday, German Defense Minister Boris Pistorius said it was “fundamentally wrong” to discuss troop deployments to Ukrain...