Rwandan tycoon Felicien Kabuga played a "substantial" role in the 1994 genocide that shocked the world, prosecutors said at the opening of his trial in The Hague on Thursday. Once one of Rwanda's richest men, the 87-year-old Kabuga used his vast wealth to set up hate media that urged ethnic Hutus to kill rival Tutsi "snakes" and supplied the murderous Interahamwe militia with machetes, the prosecution said. FRANCE 24's Fernande von Tets reports from Amsterdam.