It was not even a month ago that Vladimir Putin stood shoulder-to-shoulder with the elected leaders of the Western world to commemorate the D-Day invasion. I hope whoever issued that invitation has the decency to feel some embarrassment today. Through the past eight months of escalating Russian violence against Ukraine, too many European governments have treated the Ukraine issue as remote and marginal: regrettable, yes, but not a threat to the peace of the continent. It was more important, they felt, to sustain a normal relationship with Russia. That illusion died yesterday along with the murdered passengers of Malaysia Airlines Flight 17.