This book is now a bit out of date, but is still worth reading. It was something of a ground-breaking book when it was published (early 80's) but now seems somewhat simple compared to more sophisticated treatments of the same problems. These later books, however, largely build from Beitz, so this criticism should be taken in this light. The attack on "Realism" is the best part of the book. The attacks on nationalism and communitarianism are also worth-while though the positive theory offered in their place is clearly under-theorized and not, I think, satisfactory in the end. The worst part of the book is the attempt to "globalize" Rawls in a way that clearly doesn't work and shows a pretty serious (though very common) misunderstanding of what Rawls is up to. Finally, the almost total lack of discussion of problems relating to democracy, self-determination, and legitimacy is pretty surprising and a serious short-comming. It's worth reading the book (it's an enjoyable read) but the short-commings should be kept in mind.