The Emir of Qatar, Sheikh Hamad bin Khalifa Al-Thani received here on Wednesday the Secretary General of the Arab Gulf Cooperation Council (GCC) Abdulrahman bin Hamad Al-Attiyah. They discussed issues of concern to the GCC states and the preparations for the upcoming 15th summit of the GCC leaders, the Qatari News Agency (QNA) reported. The GCC is made up of Saudi Arabia, Kuwait, the United Arab Emirates, Qatar, Bahrain and Oman.