The Ukrainians should be bringing the neighboring Russians some real pain, but that would come with a bunch of negatives. You Russian backers and the fence sitters would whine because Ukrainians have gone on the offense and were killing "hapless" Russians ... even if you ignore the reality of the flip side. It also might make the Russians more hardline or gain them some sympathy - even if still incompetent. Maybe it is better for Ukraine to remain on defense rather than being an aggressor, but I'd sure love to see them go after some Russian soil in retribution. Bullies who start a fight deserve to get the stuffing kicked out of them - and then some.