The Harvard National Security Journal’s spring issue, published last week, may be of interest to readers of Lawfare. It has four major articles. Antonia Chayes previews her forthcoming book, Borderless Wars: Civil Military Disorder and Legal Uncertainty, with an article on legal indeterminacy and ambiguity in cyber attacks. Robert Sloane offers “modest reflections on in bello proportionality," in which he probes the API definition and recent efforts to inject more precision into proportionality. Major Christopher Curran takes on the national security threat to the U.S. posed by Mexican drug cartels and the U.S.’s legal approach in response. And finally, Mohamed Helal analyzes the purpose of the UN Security Council as it relates to the legal and institutional architecture of international security, and concludes that the answer is promoting great power peace, not upholding justice.