U.S. Treasury Warns of Possible Iran-Related Sanctions on Banks in China, Hong Kong, UAE and Oman

The core claim is supported by the validated Reuters report "米、イラン産原油購入者に制裁警告 海上封鎖で中国が購入停止と予想" and its shortlink version. Reuters says Treasury Secretary Scott Bessent warned that the U.S. was prepared to impose secondary sanctions on countries buying Iranian oil or where Iranian funds are held in domestic banks, and that Treasury had sent letters to Chinese banks indicating willingness to sanction if Iranian fund flows through those accounts were proven. This aligns with the substance of a warning about possible Iran-related sanctions involving banks in China and, in the broader reporting context, other jurisdictions handling Iranian funds. However, the user phrasing is somewhat compressed and slightly stronger than the directly validated wording: the Reuters text more specifically describes letters, secondary sanctions, and evidentiary conditions rather than a blanket announced sanction decision against all banks in China, Hong Kong, UAE, and Oman. Because the exact jurisdiction list beyond China is not fully visible in the validated Reuters fetch, confidence is medium rather than high.