A Really Tragic Ending...
...would have been his brother's death driving him back to Nazism.
shareThat was the ending in the script
Norton had it removed
But it's up to the audience to interpret it as they see fit
I don't want to think that's what happened
But realistically, I probably is
We discuss the ending at length in this thread:
http://www.imdb.com/title/tt0120586/board/flat/212772907
Lots of different opinions there and if you wanted to add anything feel free.