King Hamad bin Isa Al Khalifa of Bahrain has received a written message from the Custodian of the Two Holy Mosques King Abdullah bin Abdulaziz of Saudi Arabia, concerning ties between the two countries in all fields, in addition to the latest developments on the Arab and regional arenas. The message was delivered by Dr. Mohammed bin Aiban Minister of State and Member of the Saudi Cabinet during a meeting with the King of Bahrain here today, Bahrain BNA news agency reported. King Hamad bin Isa Al Khalifa praised the Saudi King keenness on further enhancing close ties between the GCC states and his call for transition from cooperation to the union.