Russian President Vladimir Putin has given several explanations for his country's war on Ukraine, and some are more plausible than others. They include stopping NATO's advance towards Russia's borders, protecting fellow Russians from "genocide" or the baseless claim of "de-Nazifying" Ukraine. The top-ranking priest in the Russian Orthodox Church, meanwhile, has offered a very different reason for the invasion: gay pride parades. Patriarch Kirill said last week that the conflict is an extension of a fundamental culture clash between the wider Russian world and Western liberal values, exemplified by expressions of gay pride. Yet experts say that Kirill's comments offer...