He witnessed genocides in Rwanda, Bosnia-Hercegovina and Darfur, the latter while being the head of the United Nations in Sudan. He lost his job after becoming a whistleblower regarding UN inaction in Darfur.
He was involved in witnessing genocides in Rwanda, Bosnia-Hercegovina, and Darfur, specifically during his time as the head of the United Nations in Sudan. His exposure of the UN's lack of action in Darfur led to him losing his job.