Large scale of real historical events told with an excellent screenplay that is great in details and heavy in suspense. It is more towards story focused instead of action focused, and the storyline is actually quite complicated to present but it was done really precisely, somehow they've made the plot easy to follow and characters' motivation very clear to understand. Huge plus from the acting performances, all the actors are absolutely top class and the movie works so great mainly due to those intense face-offs, so much stakes on screen but so meticulously arranged, simply unbelievable.