The problem is Russia does have missiles that can be used against any part of any city in Ukraine, their reaction to Ukraine bombing Russia could be shock and awe, indiscriminate bombing of Ukrainian cities. I think that is why NATO has been so adamant on Ukraine only using NATO weapons for defense. So far the bombing of civilian centers has been mild, yes, that is a hard thing to say when so many civilians have died but compare it with Baghdad or recently Gaza, and you will see the attacks have not been made without taking civilian deaths into consideration. I am not condoning Russia, but things are what they are. Militarily both sides have about the same philosophy, so I guess each side knows the consequences.