Of course the Ukrainians have suffered massive casualties.Please tell me you don't actually believe that the Ukrainians have not suffered massive casualties. The real numbers on both sides are withheld from everybody but I guarantee you the Ukrainian losses are much higher than what we have been told. Consider the devastation that 1 thermobaric bomb wreaks over a large area and how this weapon has been used in the conflict for such a long time already. I have seen clips from both sides showing butchering of the enemy and firmly believe that this thing will keep escalating. There are thousands of foreign fighters (military personnel but not under their countries banner) involved in Ukraine and a lot of them have already been mowed down. I've also seen a lot of footage of the very expansive cemeteries with grave after grave of fallen Ukrainian soldier.
The thing that you should be asking yourself is why have certain nations been training the Ukrainians since 2015 if they were not planning for this all along?
Other nations have been training Ukraine since 2015, because in 2014 Ukraine was invaded by Russia and Russia colonised a large, strategically vital section of Ukraine, stole an entire field of Offshore gas rigs and threatened to capture the rest of Ukraine. Russia then funded and fought with "separatists" in Ukraine, providing them an unlimited supply of tanks and weapons.
It is only reasonable to expect that Ukraine asked for help in preparing itself for when Russia decided to invade again.

