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A picture taken on February 21, 2017 shows a cake bearing a portrait of Zimbabwe's President Robert Mugabe during a private ceremony to celebrate Mugabe's 93rd birthday in Harare.
Mugabe, the world's oldest national ruler, turned 93, using a long and occasionally rambling interview to vow to remain in power despite growing signs of frailty. / AFP PHOTO / Jekesai NJIKIZANA (Photo credit should read JEKESAI NJIKIZANA/AFP/Getty Images)