Russians have a different doctrine. Theirs is to massacre civilians to create terror.
You’re guilty of what kids nowadays call “American Cultural Imperialism” assuming that American values are universal.
I disagree. I’ve actually read a translated version of their field manual equivalents, and they’ve made no secret of their doctrine since the fall of the Soviet empire.
Further, their doctrine depends on whether they actually want the city intact afterwards. They had a pretty big re-think after Afghanistan and their failure in First Chechnya.