Saudi Arabia's billionaire Prince Alwaleed bin Talal speaks to reporters during a press conference in the Saudi capital, Riyadh, on July 1, 2015. Alwaleed pledged his entire $32-billion (28.8-billion-euro) fortune to charitable projects over the coming years. The prince said in a statement that the "philanthropic pledge will help build bridges to foster cultural understanding, develop communities, empower women, enable youth, provide vital disaster relief and create a more tolerant and accepting world." AFP PHOTO / FAYEZ NURELDINE        (Photo credit should read FAYEZ NURELDINE/AFP/Getty Images)