It was hard to follow and got all the dots together. Movie is mostly dialogues with hard to find the context plus different timelines switched all the time while trying to follow what's going on.

I thought the movie was about developing the bomb, moral aspects, other history events and world wide consequences to the weapon. I was terrible wrong. Movie is full of dialogues and telling you what is going on instead of showing it and this for 3 hours straight.

Just 40 minutes in I started to get bored and by 1h I was typing on my phone... Also around the middle I was thinking about leaving the cinema for real and this wish was getting bigger every passing minute.

In the end of the movie you don't really learn anything or even know what you've just watched. So I can't explain why people saying it's 10/10 or whatever positive about it because there is nothing.