Hello? It's satire...brilliant satire
Southern didn't think nuclear war was a joke. Rather than a work of fiction, "Dr. Strangelove" was closer to a documentary about Curtis LeMay, the head of the US Strategic Air Command (SAC) and the possible consequences of US military policy in the 50s and 60s. Too bad the recordings here weren't made in a studio somewhere. If you want to read some of the original stories, like "Blood of the Wig," go find a copy of the Evergreen Review reader. You'll find some of Southern's best stuff.