The Custodian of the Two Holy Mosques, King Abdullah bin Abdulaziz Al Saud, and their Majesties and Highnesses - leaders and heads of delegations of countries of the Gulf Cooperation Council (GCC) held here this afternoon the Second closed-door session as part of the GCC Supreme Council"s 30th session. During the session, the GCC leaders will discuss topics on the agenda of the Summit. --SPA