In a long slog of a war, which Putin’s invasion of Ukraine has become, logistical success and competence are key. That, in part, is what the leaked or hacked intelligence papers show. Just as Russia is unable for now to produce sufficient trained troops, missile, artillery, tanks, or ammunition to overwhelm Ukrainian resistance in the way that Putin imagined a year ago, so the valiant and hard-pressed Ukrainians can fight as strongly as they must. But unless quantities of Western armaments keep coming and coming, and Western factories turn out literally millions of 155 mm shells every month, Ukraine keep fighting only with increasing difficulty.