In his opening remarks at the Fourth Ukraine Defense Contact Group on July 20, U.S. secretary of defense Lloyd Austin touted Kyiv’s military accomplishments and issued a warning to Moscow. “Russia thinks that it can outlast Ukraine—and outlast us,” he stated. “But that’s just the latest in Russia’s string of miscalculations.” Russia’s miscalculations in this conflict—underestimating both the strength of Ukrainian resistance and the unity of the West—are indeed serious and real, but such blunders are not unusual in the early stages of wars, including wars where, in the end, the erring side proved victorious. The Soviet invasion of Finland in 1939-40 is a prime example. Russia’s early miscalculations are therefore a poor guide in predicting the outcome of its burgeoning confrontation with the West, especially if we fail to take stock of America’s no less serious miscalculations in dealing with post-Soviet Russia.