The Treasury Department will designate a large bank next week, vowing to keep squeezing Tehran's finances until "everyone stops dealing with this regime."
Washington will sanction a large bank next week as the Trump administration turns up the financial heat on Tehran, Treasury Secretary Scott Bessent said Thursday, extending an economic offensive President Donald Trump has branded "economic D-Day." The designation aims to choke off money still flowing to Iran's government and its military machine as a U.S. conflict with the Islamic Republic stretches past its sixth month. Bessent signaled there is more to come.
"We will continue with the process until everyone stops dealing with this regime," he said.
Bessent did not name the institution, but he made clear the administration is prepared to reach well beyond Iran's borders to sever the financial lifelines that keep the regime running. The target will be named Monday, giving global markets a weekend to weigh what it means for oil flows, shipping, and the banks that finance them.
He said no country sits "above the reach of U.S. sanctions," a pointed warning that foreign banks -- including large Chinese lenders that help move Iranian crude -- could find themselves cut off from the U.S. financial system if they keep doing business with Tehran. For the world's biggest oil buyer, that is not a theoretical threat. It is a bill coming due.
The announcement marks the moment the administration stops talking about consequences and starts delivering them. Treasury has methodically assembled the case and the coalitions needed to make penalties stick, and Monday's action is the clearest sign yet that the pressure campaign is entering its enforcement phase.
Trump has framed the sanctions push as "economic D-Day," a deliberate campaign to drain the revenue that funds Iran's war effort and its nuclear ambitions. Bessent has said publicly that he intends to "asphyxiate" the Iranian government until it agrees to peace, and Thursday's announcement is the clearest sign yet that the Treasury is translating that talk into action.
The broader strategy has already reshaped global energy markets. The U.S. average price for regular gasoline climbed to about $4.22 a gallon this week, up from roughly $3.19 a year ago, according to AAA, as the conflict disrupts shipments through the Strait of Hormuz -- the narrow chokepoint that carries a fifth of the world's oil.
Oil prices are set to close the week above $100 a barrel for the first time in nearly four months, a direct result of the supply anxiety the war has created. The administration's answer is to squeeze Iran's finances hard enough to force an end to the fighting, and to open new energy sources to replace what the conflict has taken off the market.
Iran's economy survives on oil sales, and its biggest customer by far is China. Sanctioning a major bank puts Beijing on notice that the cost of propping up Tehran is rising, and it tests whether China will absorb the hit or pull back. That is the real stakes of Monday's designation: not one bank, but the network of institutions and intermediaries that keep Iranian crude moving.
The administration has paired the pressure with new supply. Energy Secretary Chris Wright said this week that the removal of Venezuelan leader Nicolas Maduro has opened the door to a major expansion of that country's oil output, with national production expected to more than double by the end of 2027. Millions of new barrels routed through American refineries would blunt any attempt to weaponize energy prices.
The combination is intentional. Washington is not simply punishing an adversary; it is building a Western Hemisphere energy base that can absorb shocks and keep the global economy moving while Iran's leverage erodes. That is what gives the sanctions their bite.
All eyes now turn to Monday's designation and the reaction it draws. If a major Chinese bank is named, expect a swift response from Beijing and fresh volatility in energy markets. If the target is a smaller intermediary, the signal may be more measured -- but the direction of travel is clear.
Bessent's vow to keep going until the world stops trading with Tehran suggests this is a starting point, not a finale. The administration is assembling the tools of economic statecraft at a pace that could define the closing chapter of the conflict, and with it the price Americans pay at the pump and the balance of power in the Middle East.
The Treasury Department will designate a large bank next week, vowing to keep squeezing Tehran's finances until "everyone stops dealing with this regime."
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