China has invoked its anti-sanctions law and ordered domestic firms to ignore U.S. restrictions on oil refiners purchasing Iranian crude [1].
This escalation marks a significant diplomatic clash over the legality of secondary sanctions. By instructing companies to disregard U.S. measures, Beijing is directly challenging the reach of American financial oversight and the enforcement of its foreign policy goals regarding Iran.
The U.S. Treasury Department recently added several oil refining companies to its sanctions list for buying Iranian oil [1], [2]. These measures target companies that continue to trade in Iranian crude in violation of U.S. secondary sanctions [1], [2].
In response, the Chinese government invoked its anti-sanctions legislation on May 4, 2026 [1]. The law is designed to protect Chinese enterprises from what Beijing describes as unlawful foreign restrictions [1], [2]. Through this legal mechanism, China has told its companies to disregard the U.S. restrictions [1], [2].
The conflict centers on the international oil trade and the ability of the U.S. to block third-party nations from trading with sanctioned states. The U.S. maintains that these sanctions are necessary to limit the resources available to the Iranian government, a position China rejects when it interferes with its own commercial interests [2].
Beijing's move effectively dares the U.S. to enforce its crackdown against firms that now have a mandate from their own government to continue trading [2]. This creates a legal deadlock for international firms that must choose between complying with U.S. law to maintain access to the dollar-based financial system, or following Chinese directives to avoid penalties at home [1].
“China has invoked its anti-sanctions law and ordered domestic firms to ignore U.S. restrictions”
This development signals a shift from passive disagreement to active legal defiance by China. By utilizing its own domestic legislation to override foreign sanctions, Beijing is attempting to create a parallel trade environment that is immune to U.S. financial leverage. This increases the risk of a broader economic decoupling and complicates the operating environment for global energy firms caught between two competing legal frameworks.
