Remembering the fact that the Ukrainian Army is underfunded and neglected, it’s doubtful that it could put up much of a fight against the Russians even if it was in top form.
To mention the fact Western Ukies hate Poroshenko for p*ssing away the lives of their sons to keep people in Ukraine who don’t want to be in the country.
Its one of those unpopular colonial wars that’s hemorrhaging him support and already calls for his resignation are being heard in Kiev. All of which suits Russia just fine.