Mmmmmm..... The 'commissar order' is different indeed Jim. But such was not the case with Malmedy or the numurous other occasions where all sides were guilty of executing prioners. It would seem that you agree with me even though it seems you don't.
London and especially 'Pearl Harbor' are different. Pearl was a military objective. London,I beleive was at first a mistake. But just the same it was in response to British bombings of German cities first.