Jeffrey Sachs, Professor of economics, leader in sustainable development, senior UN advisor, attends the second day of an international summit of Mayors on "Modern Slavery and Climate Change" on July 21, 2015 at the Vatican.

Tiziana Fabi
Jeffrey Sachs, Professor of economics, leader in sustainable development, senior UN advisor, attends the second day of an international summit of Mayors on "Modern Slavery and Climate Change" on July 21, 2015 at the Vatican.

It remains unclear whether Sachs’ approach to China has had a direct influence on the Holy See’s own dealings with Beijing.