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Idriss Deby, leader of Movement for a Patriotic Salvation (MPS). | Location: Tibesti, Chad. (Photo by Henri Bureau/Sygma/Corbis/VCG via Getty Images)

Idriss Deby, leader of Movement for a Patriotic Salvation (MPS). | Location: Tibesti, Chad.    (Photo by Henri Bureau/Sygma/Corbis/VCG via Getty Images)