I am not sure what Christopher Nolan was trying to achieve but the movie fails spectacularly. I cannot begin to describe how bad this movie is...so I won't.

If you're looking for a more realistic...truer version of events that capture the mood and desperation of that time watch any of the numerous documentaries out there. More specifically the BBC docu-drama (2004) of the same name which is excellent.

The 1958 black and white John Mills movie feels far more authentic and relevant than the 2017 feeble effort.