Corruption was so messy in Ukraine that even after Crimea's annexation and the increasing drawing of lines that was going on it was regularly cited as the
worst in Europe. Exactly how that's panned out since the war began is going to be damn near impossible to say while it's still going on, but loads of people have been booted during the war itself including from quite high office – the chatter about Russia's corruption being its greatest weakness generally ignores that it's rampant on both sides.