Written by Jeffrey Sachs To read the original text in English visit the following link: https://pascallottaz.substack.com/p/sachs-and-mearsheimer-on-spheres ABOUT JEFFREY D. SACHS Jeffrey D. Sachs is University Professor and Director of the Center for Sustainable Development at Columbia University, where he directed the Earth Institute from 2002 until 2016. He is President of the UN Sustainable Development Solutions […]