Egypt's President Abdel Fattah al-Sisi (L) shakes hands with Dubai's ruler, Sheikh Mohammad bin Rashed al-Maktoum (R), who is also vice president and prime minister of the United Arab Emirates, as Sheikh Mohammed bin Zayed al-Nahyan (C), Crown Prince of Abu Dhabi and the UAE's deputy commander-in-chief of the armed forces, presents him with a gift during the opening of the World Future Energy Summit at the National Exhibition Center (ADNEC) in the Emirati capital Abu Dhabi on January 19, 2015. AFP PHOTO / KARIM SAHIB (Photo credit should read KARIM SAHIB/AFP/Getty Images)
