The opening scene of Mamet's Ronin (1998) is amazing. A group of international mercenaries are meeting up in a Parisian café. They're all wary of each other and wait for their client, played by Natasha Mcelholne to initiate the meet.
Robert de Niro plays a former intelligence operator who has to make contact with them. Instead of waltzing in, he takes long silent minutes to scope the place out from concealment and motivated actions, identify the parties involved and formulate an armed escape plan, all while maintaining cover as a French speaking everyman.
It's a meditative, beautifully scored vignette that shows the paranoia and danger of De Niro's world... but it's also the most realistic bit of espionage tradecraft I've seen in a movie. If you're wondering what real intelligence operations look like, it's not Bourne or Bond but little tense decisions such as this.