Jan Masaryk, histoire d'une trahison

I will not question the historical accuracy, it was surely well researched, and "adopted". But I do question the presentation - what a mess! Scenes are flashing back and forth in time, cultural conflicts, discontinuities, worthless encounters. The choice of languages, spoken versus subtitles, is unfortunate. The actors had strange accents and the subtitles were poor translations. Above all, why? Why would a Czech movie-maker use a purely Czech topic in purely Czech history, to make movie in Czech republic, using Czech resources, and then produce 90% of it in a language which Czechs do not understand? I am thinking that it was meant to impress the foreigners and ignore the Czechs, who might be calling out the falsehoods. The only reason I did not rate it "1" was because it is a great subject, now regrettably abused and more difficult to correct.