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Fuel trucks branded with the Total SA logo pass along a road in Port Harcourt, Nigeria, on Friday, Jan. 15, 2016. With his security forces engaged in fighting Boko Haram's Islamist insurgency in the north, President Muhammadu Buhari can't afford renewed rebellion in the delta. Photographer: George Osodi/Bloomberg via Getty Images

Fuel trucks branded with the Total SA logo pass along a road in Port Harcourt, Nigeria, on Friday, Jan. 15, 2016. With his security forces engaged in fighting Boko Haram's Islamist insurgency in the north, President Muhammadu Buhari can't afford renewed rebellion in the delta. Photographer: George Osodi/Bloomberg via Getty Images