Diplomacy

My wife and I went to see this film a few days ago, I loved it. Excellent acting! I find the title, "Diplomatie" to fit in very well with the observation that the Swedish diplomat clearly had no intention whatever to honour his promises to the German general (i.e. to take care of his family in mortal danger of suppression by the Nazi establishment). In other words, my reading is that diplomatic practice apparently provides the practitioner of that particular political act the green light to do whatever he deems necessary to reach the objective of the "raison d'état", not excluding playing on emotions or even outright lying. Not a pretty observation. Is it correct? Neither am I convinced the film is to be taken as historically correct: the decision not to destroy Paris was the result of a balanced appraisal of the fact that it was not the communists (resistance) that liberated Paris, but ...Spanish... troops in the service of General De Gaulle executing an agenda not quite in line with American instructions. Comme quoi History is often written with a small "h".