The ugly innards of US foreign policy over the last 50 years or so. This gave me a perspective I was unfamiliar with until now and I learned a lot from it. Particularly the idea of a "corporatocracy", both what it is and how it behaves. 
 I believe the facts in the book are true but I also believe it is easier to define something like foreign policy behavior by including only the truths that are beneficial to your argument, and leaving out the other truths altogether. It is worth reading though for the perspective alone and still manages to make a strong argument.