Let the record show that Russia may see cutting off its future revenues as a lesser price to pay than denting Vladimir Putin’s ego. And that could very well be a rational calculation, given the tremendously destabilizing impact that a humiliation in Ukraine would likely produce. However, the humiliations stacking up on the other side of the equation carry a cost too, sometimes literally : Russia will cut natural gas supplies to Finland on Saturday, according to Finland’s state energy provider, the latest salvo in a growing confrontation between the two countries over the war in Ukraine. Finland this week...