The leaders of Arab countries arrived here today to participate in the 3rd Arab Economic and Social Development Summit to be held in Riyadh later today. Shihab bin Tareq Al Said, Advisor to Sultan Qaboos bin Said of Oman and his accompanying delegation arrived here today. At Riyadh Air Base Airport, they were received by Prince Mohammed bin Saad bin Abdulaziz, Vice Governor of Riyadh Region, and a number of officials. --More