The document summarizes the background of ethnic tensions between Hutus and Tutsis in Rwanda, which were exacerbated by Belgian colonization. Civil war broke out in 1990 when the Tutsi-led RPF rebel group invaded to force power sharing. In 1994, the Rwandan president's assassination triggered a genocide led by Hutu extremists against Tutsis and moderate Hutus, in which an estimated 800,000 people were killed over 100 days. The UN abandoned Rwanda during the genocide.