The finale of the one who happens to be on top of the power of another Napoleon, obsessed and unintelligent. Huge opportunities prompted him, among other things, to remake the world order to his liking - through a big war, otherwise it did not work out: the goodness of the idea was not realized by too many.
A grand natural experiment reveals the unattainability of the desired. You can’t win back: tens of millions of people lost cannot be returned. The resources to insist on their own are no longer there. It was not possible to acquire an all-destructive atomic bomb. Ahead lies the inevitable retribution from an indignant humanity, the need to collectively deal with such an indoctrinated politician who has finally realized.
Life ceases to please, and freedom is limited by the constraint of the characteristic-underground architectural form. The main character - who proved, by the way, in the trench horror of the First World War, his ability, not every soldier inherent, to look death in the face - gets the strength to rid the world of himself on his own, which could pass for a good way out of the situation, if not for an unacceptable long delay.
The Germans were certainly lucky to have had a period in which the patriotic Fuehrer became too costly. The remnants of the splash of the mighty German Spirit in the film look like a rapidly shrinking puddle.