China's Foreign Ministry condemned new U.S. sanctions targeting entities in mainland China and Hong Kong alleged to be linked to Iran [1].

The diplomatic clash signals escalating friction between the two superpowers ahead of a planned summit between U.S. President Donald Trump and Chinese President Xi Jinping [1]. The dispute highlights how secondary sanctions on third-party nations can destabilize trade relations between Washington and Beijing.

Chinese officials denied accusations that the refiner Hengli Petrochemical purchased Iranian oil [1, 2]. Beijing said the U.S. sanctions are illegal because they lack authorization from the UN Security Council [1, 2].

During a press briefing in Beijing, the Foreign Ministry said the measures are part of a broader U.S. strategy to exert pressure on China [1]. The ministry linked these sanctions to other contentious geopolitical flashpoints, including U.S. arms sales to Taiwan and the legal case of Jimmy Lai [1].

China said that the U.S. is using these sanctions to advance its own political agenda rather than addressing global security [1]. The ministry said that the targeting of Hong Kong and mainland firms is an interference in China's internal affairs [1, 2].

These tensions emerge as both nations navigate a complex trade environment marked by competing interests in the Middle East and the Indo-Pacific [1]. The Chinese side said that the U.S. should cease its unilateral sanctions to foster a more stable bilateral relationship [1].

China said the U.S. sanctions were illegal and lacked UN Security Council authorization.

The intersection of Iran sanctions and the Taiwan dispute demonstrates that U.S.-China relations are no longer siloed by specific issues. By linking oil sanctions to human rights and territorial disputes, Beijing is signaling that it views U.S. economic pressure as a unified campaign of containment, which may complicate the upcoming summit between Presidents Trump and Xi.