Ooooooh I love non-fiction books, they're pretty much all I read these days, especially political/history ones.
The Brethren, by Bob Woodward (yes, that Bob Woodward) this is my favorite and it is a larger-than-life expose' on the US Supreme Court from 1969-1974. It's 20% law and 80% power plays and internal bickering. Really changes your perspective on the process for how decisions are made. Also visits the pornography cases
Dark Territory, by Fred Kaplan - This is a narrative history of the National Security Agency (NSA) and talks about the formative events and people who shaped the agency up to and beyond Snowden. It reads like a novel and there are plenty of tense moments and facepalm scenes. Turns out national security is hard!
The Brain from 25,000 Feet, by Mark A. Changizi - If you're into psychology and the brain, this is a must read, although it'll probably only be found in a university library. It has a lot of interesting questions and experiments for why the brain behaves the way it behaves. The illusion section is really fascinating (dare I say, mind-blowing?) Why we see and hear illusions and how our brain creates, or rather hallucinates, reality as we know it.
Friendly Fire: The Accidental Shootdown of U.S. Black Hawks over Northern Iraq, by Scott Snook - This is a more academic book and gets a little dry and technical at times, like a long research paper, but it's a devastating review of how and why organizational failures happen in the military. I did a lot of research into systemic failures so I thought this was fascinating (and scary!) There's a lot of psychology mentioned such as group-think, hierarchy formation and suppression of individuality, and incorrect contextualization.