President Buhari with L-R: French Minister of Foreign Affairs and President of COP 21 H.E. Laurent Fabius, Secretary General of United Nations H.E. Ban Ki-moon, UAE Minister of Environment and Water resources H.E. Dr Rashid Ahmed Mohammed Bin Fahad, Minister of State UAE and Chairman of Masdar H.E. Dr. Sultan Ahmed Al Jaber, Executive Secretary UN Framework Convention on Climate Change Ms Christiana Figueres as President Buhari participates at the Official Opening Ceremony of the Abu Dhabi Sustainability Week at the ADNEC Centre on 18th Jan 2016 (Photo by next24online/NurPhoto) (Photo by NurPhoto/NurPhoto via Getty Images)