A few months ago I listened to a radio emission introducing a new book from a known sci-fi author. I thought it sounded really interesting, unfortunately, I don't remember the name of the author, book or radio channel.
The story is set in the USA, in the near future. It's a dystopia that portrays an age of post-factual information, where no one knows what is actually true and what isn't. The country has fallen apart, law and order is only maintained in small gated communities. Outside of these enclaves, bandits roam the countryside. Each faction in the world has its own beliefs about what has happened to the country and defends them with violence.
Apparently the culmination of disinformation is the disappearance of some city. There are wild theories about what has happened, such as a nuclear strike, etc. But there is just no reliable information.
It is possible that a war with China was somehow involved.