It takes a special kind of dumb to criticize the mistakes of others ferociously then make the exact same mistakes yourself, with the only difference being even greater incompetence.

All of the Russian criticism was plainly self serving anyway. You can clearly tell by this war that they had no qualms with anything the US did in Iraq, excluding maybe their own geopolitical interests in the area.

Is this a common law thing?

Whatever was done in the past, is something you have to allow everyone else to do?

Surely you see how that is morally untenable?

Errors of the past do not need to be repeated or allowed. (Even though they likely will be as human life is complex and fallible).