On the Interpretability of Customary International Law: A Response to Nina Mileva and Marina Fortuna
[Odile Ammann is a postdoctoral researcher at the University of Zurich, Switzerland.] “Customary international law cannot be interpreted because it’s not written.” I have heard this objection many times, including from the most seasoned international lawyers. While the interpretability of customary international law (CIL) may seem less obvious than that of written laws, I do not think that the written or unwritten character of a legal...