Leaders of Gulf Cooperation Council (GCC) states arrived here today to attend the 29th GCC Summit to be held in Muscat later today. The leaders included President Sheikh Khalifa bin Zayed Al Nahyan of the United Arab Emirates; King Hamad bin Isa Al Khalifa of Bahrain; Emir of Kuwait Sheikh Sabah Al-Ahmad Al-Jaber Al-Sabah, and Emir of Qatar Sheikh Hamad bin Khalifa Al Thani.