Ambassador of the Custodian of the Two Holy Mosques to the Republic of Singapore, Saad bin Saleh Al-Saleh, conveyed a message from the Custodian of the Two Holy Mosques King Salman Bin Abdul-Aziz to his excellency the Prime Minister of the Republic of Singapore, Mr. Lee Hsien Loong, including the Kingdom's invitation to Singapore to participate in the G20 meetings that will be held in the year 2020.