Zimbabwe President Robert Mugabe (C), flanked by his wife Grace Mugabe (L) and daughter Bona (R), stand beside a cake adorned with the name of the Gushungo clan to which Mugabe belongs, as they celebrate his 92nd birthday during a suprise party hosted for him by the office of the President and Cabinet at State House in Harare on February 22, 2016. - Zimbabwean President becomes the worlds oldest leader with no plans to step down as feuding over his successors threatens to tear his ruling ZANU-PF apart. (Photo by Jekesai NJIKIZANA / AFP) (Photo credit should read JEKESAI NJIKIZANA/AFP/Getty Images)
