South Korea also has a cinema scene. I once saw a Korean horror and it was unlike anything I saw before. Like, really weird. But it had nothing to do with spy drama.
A lot of spy drama or action from the Cold War era is very over the top and/or propagandist/fear mongering. Drama is dramatized, but can easily be regarded as overdramatized, bending the truth too much in the process. At such point, a good documentary on the subject is probably preferred. The faith I have in a country like China or North Korea being authentic on such matters in documentary is near zero, and thus I assume their drama on the matter will equal the low effort American cinema we saw previous century.
That a band like Laibach was allowed to play in North Korea is very much telling to me.
So many good series made involving the subject though. Both drama and documentary. I mean, you do want drama and not documentary? Cause the story The Americans is inspired by is documented.
For drama, check Deutschland '83 and the two successors. Has a great cast.
And of course there is Clifford Stoll's book about how he caught Hagbard Celine (see the movie '23' with a young August Diehl who later broke through in Hollywood).
German cinema, both West-German and modern, has gems regardless (I am not German btw, subs are easy to come by).