相关规则
Cambodia
Practice Relating to Rule 100. Fair Trial Guarantees
Section B. Trial by an independent, impartial and regularly constituted court
Cambodia’s Law on the Establishment of the ECCC (2001), as amended in 2004, provides in its chapter on the appointment of judges:
The judges of the Extraordinary Chambers shall be appointed from among the currently practising judges or are additionally appointed in accordance with the existing procedures for appointment of judges; all of whom shall have high moral character, a spirit of impartiality and integrity, and experience …
Judges shall be independent in the performance of their functions, and shall not accept or seek any instructions from any government or any other source. 
Cambodia, Law on the Establishment of the ECCC, 2001, as amended in 2004, Article 10 new.
The Law’s chapter on investigations provides:
The Co-Investigating Judges shall be appointed from among the currently practising judges or are additionally appointed in accordance with the existing procedures for appointment of judges; all of whom shall have high moral character, a spirit of impartiality and integrity, and experience. They shall be independent in the performance of their functions and shall not accept or seek instructions from any government or any other source. 
Cambodia, Law on the Establishment of the ECCC, 2001, as amended in 2004, Article 25 new.