Although Ukrainians’ struggle against Russia has broad support in the democratic West, these supporters fall into two quite different categories. One set finds the Ukrainians’ steadfast defense of democracy inspiring and advocates giving them all the means necessary to reclaim their country. The other set views Russia as essentially unbeatable. These supporters want to give the Ukrainians enough aid to block further Russian gains but dismisses the idea of Ukrainian victory as impossible. These fatalistic supporters are sincere in affection for Ukraine and their revulsion toward Russia, but they have repeatedly constricted the flow of aid, costing time, lives, and...