The former head of the U.N. Panel of Experts overseeing North Korea sanctions chastised Russia and China on Friday for obstructing the panel’s work and sabotaging its investigations.

Eric Penton-Voak, a former British diplomat with 30 years of service, served as coordinator of the panel tasked with monitoring the DPRK sanctions regime from May 2021 to April 2023. He was forced to vacate his post due to the disagreement over his role between representatives of the P3 members (the U.S., U.K. and France) and China and Russia.