Alison Des Forges was Human Rights Watch's senior advisor in the Africa Division and one of the world's foremost experts on Rwanda. In the period leading up to the genocide, she worked tirelessly to alert world powers to the impending crisis in Rwanda. Her efforts did not stop when the genocide ended. She continued painstakingly gathering information on these horrific crimes, which she compiled into what has become one of the main reference books on the Rwandan genocide: "Leave none to tell the story: Genocide in Rwanda", published in 1999. Alison Des Forges campaigned vigorously for justice for the genocide until her sudden death in a plane crash in the US on February 12, 2009. She also documented human rights abuses by the new government of Rwanda after the genocide and advocated for accountability for all abuses, past and present.