The Secretary General of Gulf Cooperation Council (GCC) Abdulrahman bin Hamad Al-Atiyyah congratulated GCC leaders on the launch of Common Gulf Market on Tuesday which was endorsed by GCC Supreme Council in Doha in December 2007. In a statement today, Al-Atiyyah expressed his satisfaction over this great achievement which will positively affect and advance the GCC states' economies and enhance their negotiating position and competing capability in the world economy.