Tensions between the United States and China have escalated following an announcement by US Treasury Secretary Scott Bessent regarding a new campaign to further isolate Iran. The US plan involves threatening countries that continue to trade with Tehran with exclusion from the dollar-based financial system, a move designed to pressure international partners into cutting economic ties with the Iranian government.

In response to the announcement, Beijing issued a formal warning on Tuesday, stating that it is prepared to retaliate if the US targets Chinese firms with these secondary sanctions. Chinese officials emphasized their commitment to defending domestic companies against what they characterize as overreaching US economic policy. This development has raised concerns about a potential new front in the ongoing economic rivalry between the world's two largest economies.

Separately, the Qatari Foreign Ministry issued a statement on Tuesday describing the US sanctions on Iran as unilateral. While Qatar did not explicitly threaten retaliation, the characterization of the sanctions as unilateral highlights a diplomatic divide, suggesting that the US approach lacks the broad international consensus that Washington typically seeks for such economic measures. The situation remains fluid as global powers weigh the impact of the US Treasury's new directives on international trade and regional stability.