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Norodom Sihamoni is King of Cambodia. He became King on 14 October 2004, a week after the abdication of his father, Norodom Sihanouk. He is the eldest son of King Sihanouk and former Queen consort Norodom Monineath and is the fourth monarch from the royal House of Norodom. Before his selection by a nine-member throne council as the next monarch, Sihamoni served as Cambodia's ambassador to the United Nations and UNESCO. He was educated in Czechoslovakia and was known for his work as a cultural ambassador in Europe and as a classical ballet instructor when he was still a prince. During his reign, Sihamoni has continued his cultural advocacy alongside supporting various philanthropic causes, while balancing his role as a constitutional monarch amid Cambodia's political developments.