[Tim Meyer is an Assistant Professor of Law at the University of Georgia School of Law]
As is
de rigueur in discussions of compliance with international law, von Stein’s chapter quotes in the opening paragraph Louis Henkin’s statement that “almost all nations observe almost all principles of international law and almost all of their obligations almost all of the time” (p. 477) – the claim that launched a thousand journal articles. Appropriately, von Stein’s excellent review of the compliance literature returns to Henkin in conclusion, noting in sum that “we know, for instance, that it is
not the case that almost all states respect their obligations almost all the time.” (emphasis in original) (p. 495). In between, von Stein provides a clear, concise, and illuminating review of theories of compliance with international law and the empirical evidence for and against, and empirical challenges in evaluating, these theories. International law seems to drive states to conform to its mandates at least some of the time, and our understandings of the mechanisms at work is improving, if still in need of improvement.
In this comment, I want to suggest one way in which we can deepen our understanding of how international law affects state behavior. Specifically, I want to problematize the notion of compliance as a dependent variable. Von Stein’s essay describes the state of the art in compliance studies, but as Dunoff and Pollack
note the IL/IR literature consists overwhelmingly of the application of IR theories to international law. Reconceptualizing how international law affects state behavior is a key way in which law can increasingly inform IL/IR scholarship. To put it simply, compliance – “the degree to which state behavior conforms to what an agreement prescribes or proscribes” (p. 478) – is undoubtedly a useful place to start studying how international law affects behavior, and great strides have been made in this area, but moving forward we need a conception of legal process that more accurately reflects how states actually implement and evaluate compliance with international law.