If you are like this columnist, you may have missed the recent prayer vigil in front of St. Peter’s, which featured Pope Francis leading tens of thousands of the faithful in protest of the sickening Russian military strikes in Aleppo that have targeted hospitals, aid convoys and innocent civilians.

Surely there must have been such a vigil, right? And at least as prominent as the one in September 2013? Back then Pope Francis led a much-publicized vigil aimed at dissuading President Obama from launching airstrikes on Syrian...