I'll make it short and simple. This is the most realistic, tight, and detailed spy thriller out there. Down to earth action and characters. Please don't go in expecting James Bond or Jason Bourne type stuff. This is bloody, raw and expertly narrated espionage fiction. There is nothing done for the sake of style or swag, everything is there to support the story and the story is king. Also pretty darn good acting.
The only thing that kinda drags it down is the in your face nationalistic chest thumping. Could tone down the 'YAY AMERICA' a couple of notches.