US Treasury to broaden scope of secondary sanctions on Iran, source says
XLE•Possible implications for China ties
The Treasury in recent months has sanctioned independent Chinese "teapot" refineries for purchases of Iranian oil and expanded its targeting of the shadow fleet of tankers transporting Iranian oil.
A much more powerful tool is the authority to sanction banks in China and other countries that are facilitating transactions with Iran, a step that the Trump administration has so far been unwilling to take amid a delicate trade truce with Beijing.
With President Donald Trump and Chinese President Xi Jinping scheduled to meet in Washington in late September, new sanctions on Chinese banks could sour prospects for extending a deal struck last November to keep Chinese rare earths flowing and cap U.S. tariffs.
The U.S. blockade of Iran's ports has already curbed Chinese offers to purchase Iranian crude, Reuters reported on Friday, which may lessen the impact of secondary sanctions on China.




