Sadly, as much as we all want to see the Russian aggressor humiliated and kicked out of occupied lands, it's important to remember Ukraine has a history of corruption and is no saint.
Hopefully this is just the start of more purging of government ranks. Ukraine needs to keep it's image clean if it wants continued support from the west. 
Scary to think that if Ukraine didn't have it's charismatic figurehead and just enough good apples in upper government, Russia would've been calling the shots months ago.
In fact, Russia was actually counting on corruption being easy to manipulate. It has a long and semi successful history of doing so during peacetime.
This is not to discredit the fighting spirit of Ukraine. They're an amazing people and their fighting spirit is second to none. I'm just grateful that despite the challenges of being at Russia's backdoor after the fall of the Soviet union, corruption and despotism didn't cripple these valiant defenders from losing their county.