Léonce Ndikumana Léonce Ndikumana is a professor of economics and director of the African Development Policy Programme at the Political Economy Research Institute (PERI) at the University of Massachusetts Amherst. The battle against tax evasion: A UN tax convention can ensure everyone pays their fair share G20's historic move on taxing the super-rich could shift global economic power. 1 December 2024, 10:00 AM 1 December 2024, 10:00 AM