The Accidental Superpower by Peter Zeihan is an amazingly informative and entertainingly written examination of how and why the US got to where it is without even really trying. This and his later books also discuss the rise and now beginning decline of globalization in a destabilizing world.
The guy (and his research team) has a pretty good track record of predicting geopolitical trends and even specific events that are coming 5 or 10 years down the road. I don't necessarily agree with or accept all of his ideas and analysis, but he definitely makes you think.