Anyone else notice how the media has been hot for 3 weeks and then there was a very obvious crescendo with trump backing russia and now everything's cold. What is that?
I mean that's what you want when it comes to nuclear weapons. Right? Either be the first to know or the last to know. I guess some people would prefer to die in the flash than live and struggle through an apocalypse.
To address the question seriously for a change, I think nukes are extremely unlikely because nations generally want to capture their enemies' people alive for their labor force (and also not annihilate claimable resources if they can help it).
No one has ever successfully attacked a major power across a full ocean moat. Logistics win the real war. I don't see how anyone attacks the USA without a total annihilation strategy, or from within like is happening now.