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Chicago Journal of International Law

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301

Abstract

Big data—extremely large quantities of information and the analytics used to process it—is now crucial to the way militaries operate on the battlefield. Data is used to run weapons systems, analyze intelligence, procure and deploy personnel, evaluate battlefield conditions, detain prisoners, and more. And not only is data increasingly being used on the battlefield, but operations targeting adversaries’ data—to acquire it, delete and destroy it, or distort or poison it—are becoming increasingly important as well. Beyond the battlefield, big data lies at the epicenter of adversarial activities below the armed conflict threshold. Because data is the fuel of artificial intelligence (AI), it is generating an AI arms race among the U.S., China, Russia, and other states, incentivizing large-scale cyber operations related to data. And big data is increasingly central to humanitarian operations on, and adjacent to, the battlefield, for example to monitor humanitarian crises, facilitate early warning systems, and deliver aid, as well as to investigate and prosecute atrocities.

All of these uses of data in military operations raise challenging interpretive questions under key bodies of international law: international humanitarian law (IHL), the jus ad bellum and international human rights law (IHRL). But they also challenge us to consider anew various long-standing critiques of legalism in the international sphere more generally: what we might call the efficacy critique—are these laws effective at all in constraining state and non-state actors?—what we might call the legitimation critique—do laws of war actually sanitize, and thereby legitimate, acts of aggression?—and the critique that law is simply ineffective in adapting to rapid technological or societal change.

This Article uses the rise of big data on the battlefield first to respond to these critiques and defend the importance of legalism when addressing armed conflict, and second to consider the multiple interpretive challenges and gaps in the law that are created by the new techno-social reality of big data on the battlefield. As in other instances of disruptive technological and societal change, the laws of armed conflict must be both justified anew and then adjusted, either through textual gap-filling, interpretive translation, policymaking, or the construction of new legal paradigms.

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