Do you think that the Russian "Blitzkrieg" attack has failed?

And if you're going to say that the invasion is still underway, when I say "Blitzkrieg", I mean their attempt to capture/knock out key strategic points to cause the Ukranian Army to disintegrate while only destroying a fraction of it.
This would mean that to win the war, Russia would have to fight a war of attrition and we might see echoes from the winter of '39-'40.
Do you think that the Russian "Blitzkrieg" attack has failed?
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