China National Petroleum Corporation (CNPC, Chinese state-controlled 100%, PetroChina parent) has faced sustained scrutiny over the contested 2024 sustained CNPC Russian crude oil sourcing post-2022 sanctions including the contested historic Sudan/South Sudan operations affecting CNPC's institutional ESG investor concerns over CNPC's Russian/Sudanese energy sector exposure, plus the historic 2013 USD 14 billion-plus CNPC executive corruption scandal (Zhou Yongkang case).