Former president of Botswana, Sir Ketumile Masire, member of the prize committee of the Mo Ibrahim Foundation, attends the announcement of the 2012 Ibrahim Prize for achievement in African Leadership in London on October 15, 2012. The Ibrahim Prize for Achievement in African Leadership -- the world's biggest individual prize -- was not awarded for a third time in four years as no suitable candidates were found. AFP PHOTO/JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/GettyImages)
