The invasion of Ukraine has not gone as planned for the Russians. Despite enjoying superior force strength, the Russians have failed to hold Ukrainian territory – in large part, because Russia has failed to gain air superiority over the country. Russia was supposed to breeze over Ukraine, taking Kyiv “within days, perhaps forcing a Ukrainian capitulation in less than a week.” That didn’t happen of course; the conflict has been ebbing and flowing for several months with no resolution in sight. Ukrainian forces, effective at conducting asymmetrical warfare, have thwarted Russian forces from achieving their objectives, one after another. “Russia...