Jeddah, Sha'ban 26, 1438, May 22, 2017, SPA -- Secretary-General of the Organization of Islamic Cooperation (OIC) Dr. Yousuf bin Ahmed Al-Othaimeen congratulated Saudi leaders on the success of the Arab-Islamic-American Summit in Riyadh. He praised the speech made by the Custodian of the Two Holy Mosques before the summit on terrorism and extremism. --SPA 01:12 LOCAL TIME 22:12 GMT www.spa.gov.sa/w410322