In a normal war there are no rules that are adhered to in reality, even though the Geneva Convention does state some rules. You will know what those rules are, or at least you should. I don't have the time to state them.I don't know what you mean; you say that there are no rules that actually apply: of course not. People do what they hope will win. Whatever that is.
But then you say there are rules that must not be violated. What rules are you referring to?
There are several rules that apply to this war and everybody should be aware of what they are by now. It's your job to find out but I'll start you out with a few that come to mind:
1. No Nato direct involvement
2. No attack on Nato countries by Russia.
3. No allout Russian offensive against Ukraine.
4. No nuclear weapons allowed.
5. ....................................
6. ...................................
7. ...................................
??
Any other rules that didn't apply to the destruction of Iraq and the killing of Iraqis but do apply here.