China Warns of Retaliation as U.S. Expands Sanctions on Iran

Sun Sep 06 2026 00:21:33 GMT+0000 (Coordinated Universal Time)

U.S. widens sanctions on Iran, China vows to defend its interests – a flashpoint ahead of the Trump‑Xi summit.

The U.S. Treasury announced a sweeping new sanctions package aimed at crippling Iran’s economic lifelines, prompting a strong rebuttal from Beijing. China’s Foreign Ministry declared “illegal unilateral sanctions” and pledged all necessary measures to protect its interests, especially as it is the largest buyer of Iranian oil. Analysts say the sanctions may have limited short‑term impact due to China’s deep ties with Iran and its broader strategy to counter U.S. pressure. The move comes as Washington braces for possible retaliation and as China prepares to engage in high‑stakes talks with President Trump in China next month. Rare earths and critical minerals supply chains remain a central point of tension in this unfolding showdown.

China Warns of Retaliation as U.S. Expands Sanctions on Iran

The U.S. Treasury Department unveiled a new sanctions initiative – dubbed “Operation Economic Outcast” – targeting Iran’s financial networks, oil revenue channels and any foreign banks that facilitate trade with Tehran. In response, China’s Foreign Ministry spokesman Lin Jian declared the measures to be an “illegal unilateral sanction”, threatening to use “all necessary measures” to safeguard its rights and interests.

China remains Iran’s largest buyer of crude oil, a relationship that has grown even as U.S. sanctions have hampered Iran’s port operations. Lin’s remarks reflected Beijing’s long‑standing opposition to unilateral embargoes and reinforced that China would not let its economic cooperation with Iran be disrupted.

U.S. officials described the new package as the “single greatest financial offensive ever” against Iran, warning that banks and businesses that refuse to cut ties would face isolation. Treasury Secretary Scott Bessent signaled that even foreign banks would not escape the reach of U.S. sanctions, a warning that may hit Chinese financial institutions engaged in Iran trade.

Analysts note the sanctions might have limited short‑term impact, citing that roughly 90% of Iran’s oil is sold to China – a country that has historically ignored U.S. embargoes. The measures also target almost 60 entities, individuals and vessels linked to the regime, which may raise legal challenges for the U.S. diplomatic strategy.

The announcement comes just before potential high‑level talks between President Donald Trump and Chinese President Xi Jinping in China, a context where Washington remains wary of any Beijing retaliation. China’s strict export controls on rare earths and other critical minerals underscore how the sanctions could ripple through global high‑tech supply chains.

Iran has signalled its readiness to absorb sanctions, declaring a two‑year plan to manage the fallout. This stance signals that the regime may view the U.S. measures as a new “defeat,” bolstering its resolve against what it perceives as foreign aggression.

While the U.S. pursues its economic “D‑Day” against Iran, trade partners such as India and Russia are still watching closely. Analysts argue that economic pressure alone may not break Tehran’s resolve, as the country often absorbs losses and redirects them onto its population.