Muscat, Dec. 4, 2019, SPA -- The Custodian of the Two Holy Mosques King Salman bin Abdulaziz Al Saud sent today a written letter to Sultan Qaboos bin Saeed, Sultan of Oman, inviting him to attend the 40th Summit of the Gulf Cooperation Council (GCC) Supreme Council. The message was delivered by GCC Secretary General Dr. Abdullatif bin Rashid Al-Zayani during a meeting here today with Deputy Prime Minister for Cabinet Affairs of Oman Fahd bin Mahmoud Al Saeed. --SPA 18:39 LOCAL TIME 15:39 GMT 0034 www.spa.gov.sa/w1222340