[Andrew Guzman is Professor of Law and Director of the Advanced Law Degree Programs at Berkeley Law School, University of California, Berkeley.]
This is a superb book. I say this without the slightest bit of surprise, as that is what one would expect from these authors. In addition to the quality of the content, the book is all the more important because there is no comparable tour of international law from a law and economics perspective. I have disagreements with some of the content of the book – it would be impossible to produce a serious book with respect to which other scholars were in total agreement – but this should now be a central part of the canon, not only of the law and economics of international law, but of international more broadly.
It is perhaps a sign of a maturing discussion within international law that the book does not bother to include a discussion of why studying international law from an economic perspective is useful. This area of legal scholarship has been slow to embrace analytical approaches and for many years anyone writing in that style felt the need to defend the methodology itself. It would be wonderful if we have moved past that point.
That said, it is worth noting that one of the benefits of an economic approach is that it encourages us to make clear our assumptions and models of behavior. In so doing we more fully disclose our intellectual commitments which, in turn, allows others to challenge or build on our claims. When we disagree, we can more effectively examine one another’s arguments and identify the precise points in dispute.
In my brief comment, I would like to take advantage of this feature and build off of some of what Posner-Sykes say to make a point about international cooperation in general and, more explicitly, in the area of climate change. I do not know if the authors would agree with my views, but the discipline imposed by an economic approach should, at a minimum, make clear why we disagree.