I read that when it first came out (1980?). There is a sequel, whose title I forget.
The books were written during the late 1970s to point out how the Cold War could turn hot - from that base point. Much like the Twilight:2000 background, the books went obsolete immediately after the USSR ceased to exist.
(I still haven't figured out the explanation for why Sweden's activities was completely ignored in the first book.)
Reading though Swords Against Death by Fritz Leiber. This guy captures the feel of D&D I like so well. They need to make a TV series about these two.
I haven't read that one, but it can't be that bad...
I hate to say it, but it is pretty bad. It could just be my recollection, but it felt like Leiber suddenly started collaborating with Piers Anthony at his perviest.
Major spoilers:
https://dialhforhouston.wordpress.c...fritz-leibers-the-knight-and-knave-of-swords/