Any alternate histories with a mostly non-nuclear WWIII in the 50s-70? Definitely not looking for the standard post apocalyptic novels, more like a Tom Clancy with great details about old Cold War weapons.

Like peanut butter and rat feces, I understand there'll probably be some nukes in anything and that's fine. Technically, WWII was a nuclear war. I just want to read some what-ifs without going to the standard post atomic holocaust books.