Both sides have Soviet era tanks.
Poroshenko’s problem is the Ukrainian army is composed of Western Ukrainian conscripts who have little enthusiasm for fighting a colonial war of reoccupation.
And as long as the conflict continues, eastern Ukraine will also be a surrogate proxy war between Russia and NATO.
The Russians have invaded because their Chechen mercenaries were losing badly. They invaded there neighbor just like they did to Georgia.
What the hell is wrong with Nato!
It kept Stalin and all the other evil Soviets from invading the rest of Europe.
You are a propagandist and collaborator for enemies of West!
Go back and drool over your Putin posters.