Yup, that's true in hindsight, but in 1935, Hitler was still good buddies with the English royal family for instance, diplomatic relations with most nations and Germany were still okay at that time, for example even Charles Lindbergh, and numerous US army officers were invited to Germany in order to fly their latest bf109, and the majority came back saying what great bunch of guys they all were, and that was well after 1935. Britain was still four years away from even its appeasement overtures prior to WW2, with the Luftwaffe and the RAF often having exchange visits and discussions, even on such sensitive subjects as the development of radio telephony and radar. The Olympics had not yet been hosted in Berlin at that point either, and I seem to recall reading that most nations turned up for that. Yes it was a grim time in Germany in many ways, but it was hardly a world under a shadow elsewhere.
In addition to which, I'm fairly certain that even the most pessimistic of forecasters would not have guessed in 1935 that a few years later Germany, Italy, Japan, China, America, Poland, Slovakia, Britain, Canada, New Zealand, Australia, South Africa, France, Belgium etc, etc would all be involved in a war that would cost an estimated 70 million lives, and span virtually every continent! So to write some dramatic love story from the standpoint of
knowing about all that to come, at a time when nobody could have, seems rather silly to me, but as I say, I'll check it out, it might still be a good movie even so.
Chock