China Defies US Sanctions as Trump Escalates Iran Pressure

Beijing has formally rejected the Trump administration’s sweeping new sanctions campaign against Iran, vowing to take “all necessary measures” to protect its interests as Washington escalates its maximum pressure strategy into a direct confrontation with China’s energy trade. The standoff, which erupted after Treasury Secretary Scott Bessent unveiled “Operation Economic Outcast” on Monday, threatens to open a new fault line in US-China relations ahead of a scheduled summit between President Donald Trump and Chinese President Xi Jinping in late September.

A New Phase in Maximum Pressure

Bessent’s plan, which Trump had hyped as Iran’s “Economic D-Day,” threatens secondary sanctions on any entity that facilitates transactions with Tehran. “We are launching an economic onslaught against Iran’s financial connections around the globe,” Bessent said as he unveiled the scheme, according to CNBC. “Our objective is to sever every economic lifeline that sustains this tyrannical regime until Tehran stands alone.”

The initial sanctions list included 60 individuals, entities and vessels, but notably omitted Chinese financial institutions, reflecting US caution about provoking Beijing before the upcoming Trump-Xi meeting. Asked why no Chinese banks were named, Bessent replied: “Why would I want to blow up the global financial system?”

Yet the Treasury secretary made clear that China would not be exempt from the broader campaign. “We want to make clear here today that no one is above the reach of U.S. sanctions,” Bessent said when asked whether the administration would target Chinese banks. “If they facilitate transactions and are part of the ecosystem that turns Iranian oil into money, into repression, they will be targeted.” He warned that “any entity that facilitates money laundering on behalf of Iran will be removed from the U.S. dollar system. The clock just started ticking.”

Beijing’s Defiant Response

China’s response was swift and unequivocal. Foreign Ministry spokesperson Lin Jian told reporters on Tuesday that “cooperation between China and Iran has always been conducted within the framework of international law and should not be interfered with or disrupted,” according to The Guardian. “China has already stated many times that it firmly opposes illegal unilateral sanctions. China will take all necessary measures to firmly safeguard its own rights and interests.”

Beijing’s rejection was widely anticipated. China buys more than 80 percent of Iran’s shipped oil, according to 2025 data from commodities analytics firm Kpler, making it the Islamic Republic’s dominant overseas customer. The relationship is deeply entrenched: China’s Commerce Ministry has already invoked a 2021 “blocking statute” that prohibits Chinese firms from complying with foreign sanctions deemed illegitimate, ordering several Chinese refiners to disregard US measures targeting Iranian crude.

“This is unprecedented. It’s a major escalation in terms of China’s response to U.S. economic statecraft. It is a measure of defiance by Beijing,” said Max Meizlish, a research fellow at the Foundation for Defense of Democracies, as reported by Fox News. “This is really a clear attempt by Beijing to put the ball back in the U.S.’ court and see if it’s going to actually act.”

The Stakes for Washington and Beijing

The confrontation comes at a delicate moment in US-China relations. Washington and Beijing have maintained a fragile trade truce for months following an escalatory trade war, and Xi is scheduled to meet Trump in Washington in late September. Financial and trade experts say the administration is acutely aware of the risk of Chinese retaliation, which could come through financial markets or limits on critical minerals exports.

The US has already taken its most significant action yet against China’s refining industry, adding Hengli Petrochemical Co.’s refinery on Dalian’s Changxing Island to its sanctions list, as Asia Times reported. The move underscores Washington’s determination to increase pressure on Iran even weeks before the high-stakes summit.

But analysts question whether sanctions alone can achieve what six months of military conflict have not. The US war against Iran, which began in late February after Tehran restricted travel through the Strait of Hormuz, approaches its six-month mark with no hint of military or diplomatic victory. A weak ceasefire agreement reached in June was largely discarded before its 60-day deadline expired.

“After nearly six months without a military or diplomatic victory, Washington appears to be trying to accomplish through intensified economic strangulation what military force has so far failed to achieve,” said Sina Toossi, a senior non-resident fellow at the Center for International Policy. “But Tehran is answering that zero-sum approach with one of its own.”

Iran’s Countermeasures and Regional Dynamics

Iran has been deepening its financial and military ties with Beijing and Moscow, forging a critical lifeline as it seeks to circumvent US sanctions. Tehran is seeking to join the BRICS-backed New Development Bank, and Russia has been supplying Iran with ammunition, drone components and TNT via Caspian Sea shipping routes, as Fox News reported.

“The Islamic Republic is looking to survive, but in order to survive, it needs to adapt,” said Behnam Ben Taleblu, senior director of the Iran Program at the Foundation for Defense of Democracies. “It needs to adapt not just to U.S. and Israeli military pressure, but this U.S. political and economic pressure. There’s no doubt the Islamic Republic is looking to maximize its enmeshment with countries like Russia and China that have been subject to U.S. political and economic pressure in the past.”

Iranian officials have responded to the sanctions threat with defiance. Foreign Minister Abbas Araghchi characterized Washington’s approach as “economic terrorism,” while Maj. Gen. Ali Abdollahi, chief of staff of Iran’s armed forces, vowed that “Iran’s armed forces will respond to the enemy’s new threats with crushing, punishing, and devastating responses.”

Defense Secretary Pete Hegseth has insisted that military options remain on the table. “By no means are we foreclosing using kinetic strikes anywhere in the strait of Hormuz or around Iran,” Hegseth told reporters.

Market and Political Implications

The sanctions threat has already moved markets. Oil prices climbed sharply following Trump’s announcement, with Brent crude rising above $94 per barrel, according to STL.News. If Washington successfully reduces Iranian exports to China, Chinese refiners would need replacement supplies, potentially further tightening global markets already strained by the Hormuz disruption.

The confrontation also carries political stakes for Trump. A Reuters/Ipsos poll released Monday showed support for the US war on Iran at a record low of 31 percent, with Trump’s approval rating at 33 percent, as Al Jazeera reported. The economic dimensions of the conflict could further affect his standing ahead of the November midterm elections.

What to Watch

The key question is whether Washington will follow through on its threats against Chinese financial institutions, and how Beijing will respond. Analysts at the Eurasia Group question the coherence of the administration’s strategy. “Bessent and others cannot say what this policy is meant to achieve – reopening the strait – because in the admin’s telling, the strait is already open,” said Gregory Brew, a senior analyst at the Eurasia Group. “As a result, this return to maximum pressure feels oddly devoid of purpose. The US is inflicting economic pain, felt mostly by Iran’s people, rather than its rulers, for no clear reason.”

Danny Citrinowicz, a senior researcher at Israel’s Institute for National Security Studies, warned that any strategy assuming China will eventually fall in line with Washington risks being built on a fundamentally flawed premise. “China has a strong interest in preserving Iran under the Islamic Republic and maintaining Tehran’s strategic relationship, and growing dependence, on Beijing.”

The upcoming Trump-Xi summit in late September will be the first test of whether the two leaders can manage this escalating confrontation. As China’s Foreign Ministry spokesperson Lin Jian put it: “China believes that military means, sanctions and pressure tactics are not the solution. On the contrary, they will only lead to escalation that serves no one’s interests. We call for efforts to solve disputes through dialogue and negotiation.”

For now, the world’s two largest economies appear headed toward a collision over Iran that neither can easily avoid — and whose consequences could ripple far beyond the Middle East.