I know this is a long way back but Ceesnan says:
Oh dear, have just finished a phone call with my sister who has declared that JC would "probably have declared Hitler to be an okay sort of bloke, put him on trial and sorted out legal aid for him". Summed up quite nicely I think!
If Hitler had survived that is exactly what would have been done, by the Allies, who went to a great deal of trouble to ensure justice was seen to be done. Once found guilty, he would have been hanged. "Not only must Justice be done; it must also be seen to be done."
What is your sister's problem with that.