The course of action to eventually win for Ukraine:
Mobilize and establish small battalions
Fight a non-conventional battles, non-asymmetric warfare
Absorb the huge loses, remember they will also dying as well
You have home court, use it to your advantage
Arrest all the Russian civilians in Ukraine , create concentration camp
Have agents inside Russia who you will use as a saboteur. Destroy all vital function inside Russia
Drag on the war, sooner the later people in Russia will have no stomach for war thus leading to the Putin's fall from grace.
(You ask who the expert is , well, it's me)
If u have any suggestion let me c




