Reading this makes me relieved that Nazi Germany did not obtain nuclear weapons - else a regime change ousting Hitler might not have happened at all, and it would've been free to carry on its agenda with less fear of Allied intervention.
The article basically postulates that any state with nuclear weapons guarantees its basic territorial integrity. That means sure, we might have landed in Normandy and secured France and the USSR might've secured Poland, but the German heartland would've been a no-go for the Allies for fear of a nuke to Paris or London, and a safe-zone for Hitler and his agenda for Jews, etc.