Nobody would believe the NK’s could do it. No one would buy it, despite the remake of Red Dawn.
The US is a big place, and it is decentralized. You need to hit a bunch of key bases AFTER you blind the satellites, and there are a lot of those too.
See, that’s the thing - is there a response doctrine for systematically blinding a superpower? It’s a really good question, because your response time goes down so fast.
Comms wise, you end up having to rely on voice comms via HTTP or by data coms via ULF which is hard to jam (harder to jam).
No doubt about it I’d hit the satellites first if I had the ability to do so. Nobody is dead, so a nuclear response is possibly seen as an overreaction.
But that’s assuming that somebody in the US would retaliate or try to stop you. With Obama as the CINC that can’t be presumed. We all saw what he did in Benghazi. Our enemies are much more “flexible” if they’ve got one of their guys commanding the entire military response. Know what I mean?