Acting mean lowers both your own morale and the international support. And any such act, like blowing a substation somewhere in Russia, would likely produce a s

Acting mean lowers both your own morale and the international support. And any such act, like blowing a substation somewhere in Russia, would likely produce a short-term inconvenience for some civilians at most, while giving the Russian side a legitimate reason to fight harder. It's best if RF soldiers experience shame while serving, not vengefulness. Instead, Ukraine targets oil refineries that produce fuel for the army / air force, with some success. This does not cause civilian casualties: though some employees might be hurt, I never heard of the workers dying as a result. That's the kind of infrastructure, along with military infrastructure, that is likely wise to attack on the Russian soil.