On 13 September 2023 at the Palace of Serbia, H.E. Mr. TAN Bunpa presented to H.E. Mr. Aleksandar Vučić, President of the Republic of Serbia, the Letter of Credence by which His Majesty Preah Bat Samdech Preah Boromneath NORODOM SIHAMONI, King of the Kingdom of Cambodia, appointed him as Ambassador Extraordinary and Plenipotentiary of the Kingdom of Cambodia to the Republic of Serbia.