Leaders of Gulf Cooperation Council (GCC) member states ended at Al Bustan Palace here this evening their first closed-door session of the GCC 29th Summit. The session was chaired by host Sultan Qaboos bin Saeed of Oman. During the session, the GCC leaders were briefed on a detailed report by the GCC Secretary General Abdulrahman bin Hamad Al Atiiyah on GCC progress since last year's summit held in Doha, Qatar, and other reports by various GCC ministerial committees.