Incessant "antifascist" propaganda from Moscow, baseless claims of attacks against Russians in Ukraine, incitement of Russian-speakers in eastern Ukraine, Russian troops without insignia seizing official buildings in Crimea, a stage-managed illegal plebiscite there and then its annexation by Russia, assurances from President Vladimir Putin that he has no further territorial designs in Europe (though, alas, he may be forced to intervene elsewhere to protect ethnic Russians)—yes, it all has the disturbing ring of the 1930s.

Isn't...