Autonomous Weapons Systems and Proportionality: The Need for Regulation

This Article examines the question of whether International Humanitarian Law (IHL) requires modification to effectively govern autonomous weapons systems (AWS). Given that the imminent development and deployment is unlikely to be prohibited, and that AWS may not comply with IHL in certain circumstances, the question of why and how IHL needs to be adjusted is important, and not sufficiently studied. The analysis focuses on the principle of proportionality—a principle whose implementation demands complex, contextual, and sophisticated judgment—as a means of exploring and illustrating the issue. The Article explains why the operationalization of the principle of proportionality would present challenges for AI-operated AWS, and defends proposals for certain adjustments to IHL to better regulate AWS, in line with the core principles of IHL.

(Abstract from author.)