Speaking of Russian spies, recently watched a good Russian series about Richard Sorge, although I was disappointed to learn the series made up the story about his Japanese mistress betraying him, which was not the truth. He wasn’t betrayed by her, but another member of his Tokyo ring.
As I am sure you are well aware, movies are such a dicey business for history. I get making things interesting, but so many times they make what they think is a “better” story even though the truth would actually be far better.
Like that U-571 movie. The U-110 or U-505 was real and fascinating.
But they make a fiction movie into a junior Red October, with WWII subs shooting torpedoes at each other, the boarding crew having a firefight with the Germans, etc etc.
The real story was so much better.