Ukraine blacklisted Raiffeisen Bank, just the same as they did with Hungarian OTP. Now Austria wants the blacklist gone in order for them to accept the next sanction package against Russia.
Kiev calls this blackmail.
https://euobserver.com/world/157838

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In theory concentrating all the power at one point instead of spreading it is a good idea, and I agree. In this case I don't believe would have been a good idea.
Being in the center and easier regrouping capabilities is overrated in this situation. Distances aren't that big, and Ukraine can't block the flow of Russian troops from one front to another (their surprise strikes - with their artillery and rockets - are effective basically only once).
And ofc, no surprises where the attack will commence, can't hide that much equipment and troops. And then those need to be concentrated somewhere, housed, and shielded. There might not be enough available shelters (be them simple houses, or bunkers), Velike Novosilka and Orikhiv are not large settlements.