• Treasury Secretary Scott Bessent threatens to remove any country aiding Iran from the US dollar system.
  • The policy aims to isolate Iran economically but faces skepticism and potential global repercussions.
  • China and other nations signal resistance, while the US seeks allied coordination for a broad campaign.

Dollar Dominance as a Weapon

In a stark escalation of economic pressure, US Treasury Secretary Scott Bessent has issued a blunt warning: any nation that helps Iran will be cut off from the US dollar system. Speaking to reporters on Thursday, Bessent framed the move as part of an unprecedented sanctions campaign, promising the "toughest sanctions in history" against Tehran and its partners.

"This is a clear message," Bessent said. "If you facilitate Iran's regime, you will lose access to the world's primary reserve currency. That is a price no economy can afford."

Treasury officials are reportedly preparing a series of coordinated actions, including invoicing requirements for Iranian oil in dollars, extending restrictions to secondary actors, and leveraging financial infrastructure to choke Tehran's revenue streams. The strategy reflects a broader push to use the dollar's centrality as a geopolitical tool, a move that has drawn both support and alarm.

A High-Stakes Gamble

Yet the feasibility of such a sweeping threat is far from certain. Sanctions experts note that enforcing dollar-based penalties on a global scale would require unprecedented cooperation from financial institutions, many of which have already grown wary of secondary sanctions. The move could also accelerate de-dollarization efforts among US adversaries, a risk that some analysts say could undermine the very leverage being wielded.

"Using the dollar as a weapon is a double-edged sword," said one former Treasury official, speaking on condition of anonymity. "If you push too hard, you may push countries toward alternative payment systems, which would erode US financial hegemony in the long run."

The threat comes amid a volatile geopolitical landscape. China, Iran's largest oil buyer, has signaled that sanctions alone will not resolve the issue, with foreign ministry spokesperson Lin Jian stating that "pressure and threats are not the way to solve problems." European allies have called for a more coordinated, diplomatic approach, while some regional actors have privately expressed concern over the economic fallout.

Political Pressures and Economic Reality

Bessent's rhetoric also reflects domestic political currents. The administration faces pressure from lawmakers who advocate for a maximalist posture toward Iran. Some have hinted at "economic D-Day" style actions, urging the Treasury to move beyond symbolic measures. Bessent has echoed that language, vowing that "this is just the beginning."

However, the gulf between political posturing and effective sanctions enforcement remains wide. Iran has weathered decades of sanctions, and its economy has adapted through barter arrangements, non-dollar transactions, and a shadow fleet of oil tankers. Cutting off all dollar access would require not just executive orders but a global enforcement network, a prospect that even Treasury insiders acknowledge is daunting.

"This is not a light switch," said a sanctions lawyer familiar with the planning. "It's a long-term campaign that requires constant pressure, intelligence sharing, and diplomatic muscle. The reality may fall short of the rhetoric."

The Road Ahead

As the administration finalizes its strategy, market participants are watching closely. Any shift in dollar policy would ripple through international trade, finance, and sovereign debt markets. The oil market, in particular, has already shown signs of jitters, with crude prices ticking up in anticipation.

For now, the threat remains largely rhetorical, but the message is clear: the US is prepared to use its financial leverage to its fullest extent. Whether that translates into effective isolation of Iran—or triggers a global backlash against the dollar—remains an open question.

Reuters contributed to this report. This story has been updated to clarify Treasury Secretary Bessent's remarks and to include reactions from international officials.