Jandy Hardesty’s review published on Letterboxd:
What a nearly totally atypical Alfred Hitchcock film. It's a political thriller (accent on the "political") based on actual events surrounding the Cuban Missile Crisis, with Russian defectors and CIA agents and French spies and Cuban resistance fighters and double agent spy rings. It's really all a bit too much, though lots of sections work quite well on their own.
There are a few shots I'd say feel like Hitchcock (a watcher in a mirror, a few high-angle close-ups during interrogations), but for the most part, this feels much more like Costa-Gavros's Z or similar political thrillers of the time. I almost wonder if I would've gone along for the ride a bit more if I hadn't kept looking for Hitchcocky things.