China Vows to Defend Its Interests as US Moves to Expand Sanctions on Iran and Trading Partners

China has issued a sharp warning to Washington after the United States announced plans to widen economic sanctions on Iran and its trading partners, a move that directly targets Beijing’s long‑standing commercial ties with Tehran.

Foreign ministry spokesman Lin Jian said China “firmly opposes illegal unilateral sanctions” and will take “all necessary measures” to safeguard its national interests. His remarks followed US Treasury Secretary Scott Bessent’s announcement of sweeping new measures aimed at isolating any country that continues financial partnerships with Iran.

China remains Iran’s largest oil buyer, though volumes have declined under the US blockade of Iranian ports. Lin insisted that cooperation between the two nations “has always been conducted within the framework of international law and should not be interfered with or disrupted.”

Bessent described the sanctions package as “the single greatest financial offensive ever” against Iran, warning that banks and businesses worldwide would face consequences if they refused to sever ties. He said President Donald Trump would personally call world leaders with “specific requests” to halt interactions with Tehran.

The timing is significant: the announcement comes ahead of planned talks between Trump and Chinese President Xi Jinping next month. Washington is expected to tread carefully, aware that China controls the processing of most of the world’s rare earths and critical minerals, essential for high‑tech manufacturing. Beijing has already tightened export controls on rare earths during previous trade negotiations.

China’s response also followed comments from Iranian Economy Minister Ali Madanizadeh, who said Tehran was “fully prepared” for expanded sanctions. He claimed the measures would lead to “another defeat” for the US, adding that Iran had a two‑year strategy ready to manage the fallout. “We also have our own tools and know how to play the game,” he said.

As tensions escalate, global markets and diplomatic channels are bracing for the next phase of US‑China‑Iran confrontation — one that could reshape energy flows, trade alliances and geopolitical leverage.