OURE CASSONI, CHAD FEBRUARY 26: Angelina Jolie, the Oscar winning actress and UNHCR Goodwill Ambassador meets a woman with mental problems that is chained to her tent outside a refugee camp. The other residents of the camp ostracized the woman and she moved out. Angelina Jolie spent two days visiting Oure Cassoni, a refugee camp close to the Sudan border. Almost 27,000 refugees lives there and it were opened in 2004. .(Photo by Per-Anders Pettersson/Getty Images).