Europe and the US share concern about security of energy supply. The similarity mostly ends there.Europe has been rattled by Russia’s willingness to curb deliveries of natural gas in apparent attempts to advance its political goals.It matters little to Europe that Russia’s direct targets so far have been adjacent, non-European neighbors that-depending on who’s interpreting events-Moscow was trying to bring to heel or simply dunning for overdue accounts. None of that should matter to Europe. Gas not delivered on schedule during winter is gas not delivered, whatever the reason.In plenty of other ways lately, Russia has been behaving like the bully it used to be. Europe has...