The United States has threatened secondary sanctions against buyers of Iranian crude and confirmed warning letters were issued to two Chinese banks. U.S. Treasury Secretary Scott Bessent stated Washington anticipates a pause in Chinese crude purchases as an American naval blockade on Iran takes effect. The Treasury Department also placed new sanctions on more than two dozen individuals, entities, and vessels tied to Iranian oil transport.
A commentary by Reuters columnist Mike Dolan examines how regional conflict and shifting trade patterns are testing the traditional petrodollar system. According to U.S. Treasury data cited in the analysis, Saudi Arabia and the UAE hold nearly $250 billion in U.S. Treasuries, while Deutsche Bank notes Saudi oil exports to China are now four times larger than those to the United States. The piece highlights growing scrutiny over non-dollar settlements, including the petroyuan, and the evolving economic alignment between Gulf producers and Asian markets.
The US Treasury determined that Executive Order 13902 applies to Iran's automotive and rail sectors, effective October 1 with no wind-down period. The measures target Iranian manufacturers alongside international suppliers based in the UAE, Hong Kong, and mainland China. Foreign financial institutions facilitating transactions in these sectors now face secondary sanctions exposure.
Senior U.S. senators Jeanne Shaheen and Roger Wicker have urged Secretary of State Marco Rubio and Treasury Secretary Scott Bessent to enforce sanctions under the newly enacted Lindsey O. Graham Sanctioning Russia and Iran Act of 2026. The lawmakers called for penalizing front companies and intermediaries in Dubai and Hong Kong, as well as dual-use tech supply lines in China, the UAE, and Türkiye. The majority of the legislation's provisions enter into force on October 18, 2026.
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