References Archbishop Desmond TutuJune 12, 2011 Nobel Laureate José Ramos-HortaApril 25, 2008 Peter GabrielApril 25, 2008 Origins/Estée LauderMay 12, 2007 Participant MediaMay 1, 2007 The Carter CenterApril 12, 2006 UN Secretary General Kofi AnnanMarch 24, 2006