Three and a half years after the start of the war, Russian forces have an edge over the defending Ukrainians in almost every aspect.

And Moscow is pushing the envelope with ever-bigger drone and missile attacks targeting military infrastructure all over Ukraine, including in the western regions in the deep rear.

At the same time, Russian forces are exerting pressure all over the frontline: against Sumy, Kharkov, Donetsk, Zaporozhie and Kherson.