U.S. Widens Iran Sanctions, Threatens Dollar Access for Trade Partners

The United States has expanded its economic sanctions against Iran, threatening to sever access to the dollar-based financial system for countries that continue to trade with Tehran. While Iran vowed swift retaliation, the initial measures stopped short of targeting major Chinese financial institutions, a move that briefly tempered market concerns.

Treasury Details New Measures

U.S. Treasury Secretary Scott Bessent announced the new sanctions on Monday, targeting 60 individuals, entities, and vessels. The core of the directive is the threat of secondary sanctions, which would penalize foreign entities engaging in significant transactions with Iran by cutting them off from the U.S. financial system.

However, Bessent did not immediately name the countries or specific institutions that would be targeted, stating he wanted to provide them time to comply. He noted the goal was not to "blow up the global financial system," according to Reuters. The list of newly sanctioned entities notably did not include any of the Chinese banks suspected of facilitating Iran's oil exports.

Tehran's Defiant Response

Iranian officials responded with threats of retaliation. Economy Minister Ali Madanizadeh characterized the U.S. move as an "economic terrorist attack" and warned that "the enemies should wait for an attack," as reported by state television. Madanizadeh also expressed confidence that key trading partners like China and Russia would not adhere to the U.S. measures.

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This was echoed by a spokesperson for Iran’s Islamic Revolutionary Guard Corps, Brigadier General Hossein Mohebbi, who vowed "heavy blows to U.S. vital interests and energy chokepoints" if Iran's infrastructure is threatened, according to Press TV.

Market Reaction and Geopolitical Context

Despite the escalating rhetoric, oil prices fell by more than $2 a barrel on Monday. The market's reaction suggests that investors may be focusing on the Treasury's cautious approach, particularly its decision to delay immediate action against major players like Chinese banks, although they remain braced for potential future supply disruptions.

The sanctions are the latest development in a conflict that began nearly six months ago with U.S. and Israeli strikes on Iran. Analysts suggest Washington's hesitation to sanction Chinese banks is a strategic move to avoid retaliation from Beijing ahead of planned talks between U.S. President Donald Trump and Chinese President Xi Jinping.