Why should Russia use their best artillery, tanks, machinery, etc., to play a cat and mouse game with Ukraine, and the U.S. all this time? Any country would be stupid, to diminish their real war machinery for a spot of land the size of Texas. They can simply sit back and watch the U.S. overextend, and destroy itself, while depleting it’s own inventory and resources, which has ultimately been the case.
Has Russia been holding back any of it’s best troops, tanks, planes, missiles, bombs, etc except it’s nukes since the war began?