On March 17, 2025, His Excellency CHEY Ratha, Ambassador-designate of the Kingdom of Cambodia to Brunei Darussalam, paid separate courtesy calls on His Excellency Datuk Mohd Aini Atan, High Commissioner-designate of Malaysia to Brunei Darussalam, and His Excellency Dr. Achmad Ubaedillah, Ambassador of the Republic of Indonesia to Brunei Darussalam.