I've thought the same recently - The vast majority of Ukrainians don't want to be part of Russia. Even if Russia took control of the country - it would become unmanageable, even a few resistance fighters can do far more today than was possible in the second world war. There would be a stream of Russian soldiers going back in body bags and likely atrocities that would strengthen and broaden the sanctions.
> There would be a stream of Russian soldiers going back in body bags and likely atrocities that would strengthen and broaden the sanctions.
We're already past both those points - estimates are tricky but it seems likely that over 100,000 have already been killed and the Ukranians are already excavating mass graves in retaken areas. I don't think there's much headroom to increase sanctions? What's left unsanctioned?
(by comparison, I see figures for the US lost about 60,000 KIA in Vietnam and 7,000 in Iraq, across the whole duration of those wars)