For Americans who follow the Russian-Ukrainian war, the past few months must look very strange. In the first half of summer, the story from Kyiv – and the many western media outlets that repeated it – was that Ukraine was winning. Then, not long after the NATO summit in July, Kyiv announced it lacked the interceptors to prevent a winter disaster. The country needed 300 missiles to survive, we were told. Even if these 300 missiles arrive, they are unlikely to protect a country as large as Ukraine from the sheer volume of Russian ballistic attacks and glide-bomb strikes. Now...