War represents a contest of wills, the German strategist Carl von Clausewitz argued some 200 years ago. On this point, the Ukrainians fiercely defending their homeland seem to have a distinct advantage over the invading Russian forces. But, to win a war, will must be supported by military means – and that requires industrial and economic strength. Here, Russia might have an advantage over Ukraine for now, but it is far weaker than the West it ultimately aims to challenge.