sentences:  During 2005–06, de Waal was seconded to the African Union mediation team for Darfur, and from 2009–12 served as senior adviser to the African Union High-Level Implementation Panel for Sudan.He was on the list of Foreign Policy's 100 most influential public intellectuals in 2008 and Atlantic Monthly's 27 "brave thinkers" in 2009.He is an editor of the "African Arguments" book series published by Zed Books with Richard Dowden, Director of the Royal African Society.