I rented this after seeing the film "Snowden" which is an excellent film. This book, however, is incredibly boring. The author (played by Star Trek's new Spock in the film) spends 80% of the book talking about his meetings with Snowden and what transpired in great detail. But when most of that detail has nothing to do with the government spying on the world, there's no point to it. It's just fluff. Another 10% is mired down with tables and figures which don't really add to the why's and how's. The last 10% gives the facts of how the US government spies on the world and how they've misused that information. But I got a better view of it from the film. So the book's pretty bad.
It would've worked much better had the author stuck to what Snowden told him and how it all unfolded, NOT his personal meetings with Snowden in such great detail. But then he couldn't have charged as much for the book. Boring. Thank God I didn't buy this book.