U.S. Sanctions Chinese Procurement Network for Supporting Iran’s Nuclear Research and Missile Development as Commission Updates China-Iran Timeline
New Entries Track Potentially Broader Sanctions on China, Declining Chinese Imports of Iranian Oil, and Beijing’s Response to Mounting U.S. Economic Pressure
The U.S.-China Economic and Security Review Commission (USCC) today released an update to its timeline, Enabling Iran: A Timeline of China’s Role During and After Operation Epic Fury, tracking key Chinese actions, official statements, and other developments related to the conflict involving the United States and Iran and its aftermath.
The latest update highlights growing U.S. scrutiny of China’s economic relationship with Iran.
“China remains by far and away Iran’s most important economic lifeline, particularly through its purchases of Iranian oil,” said Chair Randy Schriver. “The latest developments underscore the importance of examining how Beijing’s economic relationship with Tehran helps sustain Iran despite U.S. sanctions and how the United States can address the role of third-country enablers.”
“Chinese components are the feedstock of the Iranian war machine,” said Vice Chair Mike Kuiken. “Beijing wrote its blocking rules in 2021 and left them unused for five years. It reached for them in May for the first time, to shield the refineries buying Iranian crude. The parts going into Iranian missiles and the oil paying for them are the same closed loop, and Beijing sets the terms at both ends.”
The latest updates also highlight several developments in China’s relationship with Iran:
- The U.S. Treasury Department sanctioned a China- and Hong Kong-linked procurement network for allegedly helping Iran acquire critical technology for nuclear research and ballistic missile development through front companies, covert financial channels, and logistics intermediaries.
- China’s Iranian oil imports have fallen sharply amid the conflict and renewed U.S. pressure, dropping from an average of roughly 1.4 million barrels per day in 2025 to a provisional 534,000 barrels per day in August. Beijing also relaxed refined-fuel export restrictions following disruptions to crude supplies caused by the war.
- China continues to provide Iran significant economic, technological, and diplomatic support, helping Tehran sustain oil exports, evade sanctions, and obtain dual-use technologies while Beijing seeks to protect its broader interests in the Middle East.
The timeline is available here and will continue to be updated as events unfold.
More than 25 years ago the bipartisan U.S.-China Economic and Security Review Commission began its work advising Congress on the economic, trade, and national security implications of the U.S.-China relationship, and providing recommendations to Congress for legislative and administrative action. Follow the Commission on LinkedIn and via @USCC_GOV on X/Twitter, Instagram, and YouTube.
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