“Macchi has skilfully provided an overview of the evolution of the business and human rights debate, which ultimately led to the adoption of the UNGPs. … it is a valuable contribution to students and scholars of political science and law, as well as practitioners and policy makers seeking a comprehensive introduction to environmental due diligence. The thorough footnotes and precise citations are also noteworthy and appreciated by readers.” (Viktoria Reisch, South African Journal of International Affairs, July 12. 2023)