The expert explains that the lawsuit filed by Mexico against US weapons manufacturers is unprecedented and could become a model for other countries to also demand accountability
Marisol Jiménez, El País
June 10, 2025
León Castellanos-Jankiewicz, 40, has eyes that are trained to read between the lines. From the University of Amsterdam and The Hague, where he directs a legal clinic on arms trade and works at the Asser Institute for International and European Law researching the human consequences of illicit arms trafficking, he observes with surgical precision a reality that is devastating his home country: 135,000 weapons cross the border from the United States into Mexico each year, most of them from small or medium-sized manufacturers. “The United States Supreme Court has given us a new path,” he says, following a recent adverse decision by that court.
