 He is the eldest son of King Sihanouk and Queen Norodom Monineath.He was Cambodia's ambassador to UNESCO and named by a nine-member throne council to become the next king after his father Norodom Sihanouk abdicated in 2004.Before ascending the throne, Sihamoni was educated in Czechoslovakia and was best known for his work as a cultural ambassador in Europe and as a classical dance instructor.