Yes
Science Fiction
This magazine is aimed at fans and creators of sci-fi and related media of all kinds. It includes all content related to the sci-fi genre and only content related to the sci-fi genre. The goal is to build a community for everyone who enjoys science fiction and related topics. This includes the obvious books, movies, and TV shows, but also original writing, the discussion of writing SF, futuristic art and designs, and the science and technologies that inspire the sci-fi genre. **Team Top 20**
Dr Strangelove could be backstory for a post-apocalyptic society.
It would work for anything from A Canticle for Leibowitz to the Fallout games.
I agree. It's a pre-apocalyptic movie that gets as close as possible to crossing that boundary, without doing so.
Though I would argue that there's not a hard cutoff between the pre-apocalypse and post-apocalypse. There is also a period where the apocalypse is actively occurring. So there's a pretty big barrier to it becoming post-apocalyptic.
No, because it's about how the apocalypse happens, not what people do after.
There's also nothing sci-fi about it. The Russians could have built a doomsday device, they just didn't (as far as I know).
It's not "post" apocalyptic, so no. I'm not sure I'd call it sci-fi either, but it's more applicable.