Director of Umm Al Qura University Dr. Bakri bin Matouk Asas has hailed efforts by Custodian of the Two Holy Mosques King Abdullah bin Abdulaziz Al Saud in the promotion of Islamic solidarity and commitment to the unity of Muslims. The minister said in a statement to Saudi Press Agency that the call by the Custodian of the Two Holy Mosques for holding the Islamic Solidarity Summit Conference in Makkah is of vital importance and indicates the king's keenness on Islamic unity.