Duty by Robert Gates.
I wasn't going to read the book until a friend of mine recommended it. He's steered me to a number of good ones over the years. Duty is another of his winners.
It is an incredible story from a number of points of view. One, a Secretary of Defense who serves a Republican president and a Democrat, that's worth reading the book for on its own. Two, it paints a great picture of how things get done inside our government. It sure isn't pretty. Three, a tale of government service spanning the jobs and decades of Mr. Gates time in D.C. is also worth the read.
Five stars.