FILE PHOTO: Leader of the Cambodia National Rescue Party (CNRP) Kem Sokha attends a meeting with German Ambassador to Cambodia Christian Berger at his home in Phnom Penh, Cambodia, Nov 12, 2019. (Photo: REUTERS/Samrang Pring)

PHNOM PENH: The trial of Cambodian opposition leader Kem Sokha on treason charges will begin on Jan 15, a court said on Monday (Dec 9).