Photo taken on April 14, 2016 shows a scene of the 13th Organization of Islamic Cooperation (OIC) Summit in Istanbul, Turkey. Turkey are hosting the two-day 13th OIC Summit on April 14-15. (Xinhua/Anadolu Agency)

Leaders and representatives pose for a group photo during the 13th Organization of Islamic Cooperation (OIC) Summit in Istanbul, Turkey, on April 14, 2016. Turkey are hosting the two-day 13th OIC Summit on April 14-15. (Xinhua/Anadolu Agency)