Founder of the Mo Ibrahim Foundation, Mo Ibrahim; the chief operating officer (COO) of Facebook, Sheryl Sandberg; lead singer of the Irish rock group U2, Bono; and the Founder of Giving Women Wings in Pakistan, Khalida Brohi, attend the Clinton Global Initiative 2013 (CGI) in New York September 24, 2013. Timed to coincide with the United Nations General Assembly, CGI brings together heads of state, CEOs, philanthropists and others to help find solutions to the world's major problems.