The lid blew off the Ukraine echo chamber this week as Russian artillery pulverized Ukrainian forces in Donbas. Ukraine has lost 10,000 dead, 40,000 to 50,000 wounded, and 8,000 captured. It is running out of Soviet-era ammunition for its limited artillery. A month ago the whole American body politic, from progressive left to neo-conservatives, drank the victory Kool-Aid. Remember when Russia’s incompetent, corrupt army was about to be swept from the field? As is their wont, the Russians blundered around and took losses for a few weeks before figuring out how to wage an old-fashioned, World War II-style artillery campaign....