Game Theory and Customary International Law: A Response to Professors Goldsmith and Posner

In a pair of recent articles, Professors Jack Goldsmith and Eric Posner have used game theoretic principles to challenge the positivist account of customary international law. Their writings join other early attempts to apply game theory to the international law sources. The author has two purposes in this Article. The first is to evaluate game theory’s potential for yielding greater insight into customary international law and international law more generally. The second is to respond to the conclusions about customary international law drawn by Professors Goldsmith and Posner.