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Theorizing Precedent In International Law, Harlan G. Cohen

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Precedent presents a puzzle for international law. As a matter of doctrine, judicial decisions construing international law are not-in-and-of themselves law. They are not binding on future parties in future cases, even before the same tribunal. And yet, international precedent is everywhere. From international investment to international criminal law to international human rights to international trade, prior decisions are invoked, argued over, and applied as precedents by practitioners and by tribunals.

How and why do certain interpretations of international law take on the weight of precedent, reshaping international law arguments around them, while others do not? This chapter develops a …