A floating gas station operated by Blacky Oil Nig Ltd. refuels water vessels near Swali market on the Nun River in Yenagoa, Nigeria, on Thursday, Jan. 14, 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