Imam and preacher of Islamic Cultural Center in the Austrian capital Vienna Sheikh Mohammed Omar Kaleb has stressed that the Kingdom of Saudi Arabia, under the leadership of the Custodian of the Two Holy Mosques King Salman bin Abdulaziz Al Saud, and HRH Crown Prince, is exerting great efforts in caring for the Two Holy Mosques and serving pilgrims and Umrah performers. He also praised great services being provided by the Kingdom to expand the Two Holy Mosques, develop holy sites, and operate the fast train between Makkah and Madinah to increase the number of pilgrims and Umrah performers in the coming years according to the Kingdom's Vision 2030.