Pretty good as far as textbooks go. It is not without some obvious biases, but is anything? It's a textbook with an argument (one prominent one being that strategy is an art rather than a science and defends the relevance of strategic studies, that humanitarian aid is akin to war) more than a book that simply explains strategic studies. It sometimes gets into some very technical military stuff that I admit I kind of glossed over, but has several interesting chapters that give a decent overview of security and conflict in the modern day. I didn't mind the visible biases too much, but don't be bashing international humanitarian efforts when I'm just trying to learn, okay?