This is an AMAZING book, and I loved it. My favorite chapter was definitely the Ethics of Realism, a school of thought I was pretty hardcore about until reading that chapter's author's eviscerating critique of pure, classical Realism. The whole book is really a way of saying, "hey, all of these international relations are great, but take an eclectic approach to international affairs. A framework can be useful, but when you see the world through an unchanging, rigid lens, you'll miss how the world actually is." I still consider myself a fan of the Realist school - I just have more awareness of the school's shortcomings. Morals have an important role in international affairs, and I've found it kind of funny how Realists will label anyone who thinks that genocide or war crimes are bad, they'll say, "oh, well, you're just a moralist so you're a tiny baby who needs their diaper changed." Anyways. Great book. This is a must read for people wanting to study international relations. I recommend skipping around and gravitating to whatever sections interest you. Come at the book with your questions about international relations and actively search for the answers; it makes for a more engaging experience.