Putin thinking he can get away with this is already a strong signal of madness. I think he lost his touch with reality and the situation is only going downhill from now. I'd like to be wrong on this one, but for a first time in a long while, I'm not optimistic.
I'd be curious to learn a scenario that leads out of this without any more significant damage or escalation.
Ukraine just got green lights to become an EU member. Let's hope this will have the effect of deterring nature and not more fuel for madness.