Eighteen months into Vladimir Putin’s war on Ukraine, two things seem clear. First, the war matters. After 15 years of failed Western responses to Russian aggression against Georgia and Ukraine, another failure to contain and deter Russia would have catastrophic consequences around the world.

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A robot from AgiBot is seen during the Global Developer Conference, organized by the Shanghai AI Industry Association, in Shanghai on February 21, 2025. (Hector Retamal via Getty Images)