Trump hints at potential sanctions on Chinese banks over Iran ties

President Donald Trump offered a two-word response that sent a clear signal to Beijing. When reporters asked why he hasn’t sanctioned Chinese banks over their transactions with Iran, Trump replied from the Oval Office: “Who said I’m not?”

The remark landed just two days after Treasury Secretary Scott Bessent unveiled “Operation Economic Outcast,” a sweeping expansion of secondary sanctions against Iran that designated over 60 entities across multiple sectors. None of those entities were major Chinese banks.

What Operation Economic Outcast actually covers

Announced on August 25, the Treasury’s latest sanctions package broadened US authority across five specific sectors tied to Iran’s economy: digital assets, technology, gold, aviation, and shipping. The targets included smaller Chinese companies involved in facilitating Iranian trade, but conspicuously excluded the large state-backed financial institutions that lawmakers on both sides of the aisle have been demanding action against.

That omission isn’t accidental. The administration is reportedly trying to thread a diplomatic needle, applying maximum pressure on Tehran’s revenue streams while keeping relations with Beijing functional enough for a planned Trump-Xi meeting.

China purchases an estimated 80-90% of Iran’s seaborne crude exports, making Chinese financial institutions the primary plumbing through which Iranian oil revenue flows. US lawmakers from both parties have pointed to this dependency as the single biggest vulnerability in Washington’s Iran pressure campaign.

The digital assets dimension

The inclusion of digital assets as one of the five targeted sectors is notable and not symbolic. Iranian-linked networks have long used crypto channels to circumvent traditional banking sanctions. Expanding secondary sanctions authority over digital assets means that foreign entities, including exchanges and over-the-counter desks operating in jurisdictions like China, could face penalties for processing transactions tied to Iranian networks, even if those entities have no direct US presence.

The geopolitical chess match

Washington and Beijing are engaged in parallel negotiations across trade, technology, and security issues. Sanctioning major Chinese banks would represent an escalation that goes well beyond Iran policy, effectively weaponizing the dollar-clearing system against China’s financial core.

Bipartisan pressure in Congress has been building for months. Lawmakers argue that targeting smaller intermediaries while leaving major banks untouched is like patching leaks in a dam while ignoring the open spillway. If 80-90% of Iran’s seaborne crude revenue flows through Chinese banks, then no sanctions regime is complete without addressing those institutions directly.

The administration’s counterargument, at least implicitly, is that timing matters. Announcing sanctions on major Chinese banks before a high-stakes diplomatic meeting would eliminate leverage that might be more valuable as a threat than as an executed policy. Trump’s “who said I’m not?” framing reinforces this reading.

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