Started The Penultimate Truth by Philip K. Dick last night. The cover calls it "His classic vision of post-nuclear society." Interesting so far, but I can definitely tell that it's old (1964). Basic scenario is that a US-Soviet war started on Mars, so people had time to hide underground before the fighting started on Earth. Most of the population has lived underground for 15 years now (the year is 2025), but the war has been over for a while, and they are fed fake war images to keep them underground by the few people who are above ground. They tell themselves they have altruistic motives (keep them underground and they won't start civilazation again, won't start fighting again, won't nuke the Earth again), but it mostly seems they just want to enjoy the good life.
About a fourth of the way through it.