U.S. Threatens ‘Toughest Sanctions in History’ to Collapse Iran’s Regime

WASHINGTON — Signaling a dramatic escalation in Washington's foreign policy, U.S. Treasury Secretary Scott Bessent announced on Thursday that the United States is preparing to unleash the "toughest sanctions in history" against Iran. The aggressive economic offensive aims to fundamentally isolate Tehran and force the collapse of the ruling regime.

Speaking to financial markets and media outlets, Bessent framed the upcoming financial penalties as part of a synchronized "one-two punch," combining an existing U.S. naval blockade with unprecedented economic warfare.

"We have the blockade, and we are going to have the toughest sanctions in history," Bessent told reporters. "It is going to work in Iran, and we are going to collapse this regime."

An "Economic D-Day" and Demands on Global Allies

The Treasury Secretary’s remarks follow a sweeping social media announcement by President Donald Trump, who dubbed the impending crackdown an "Economic D-Day". The administration has made it clear that the strategy will expand beyond direct measures against Iran to target international entities, businesses, and third-party nations that sustain Tehran's financial lifelines.

"ANY country that allows its financial institutions, businesses, airports, or government entities to provide any type of lifeline to Iran will itself face TREMENDOUS Economic Consequences," Trump warned.

Washington has specifically pointed to oil smuggling networks, swap lines, cash transfers, exchange houses, and front companies as primary targets for the upcoming financial blitz.

Pressure Mounts on Beijing

A central focus of the administration's new strategy involves international compliance, particularly concerning China, which purchases the vast majority of Iran's seaborne oil exports.

When pressed on whether Washington would directly penalize Chinese entities or financial institutions over continued energy trade with Tehran, Bessent avoided detailing specific enforcement mechanisms. However, he urged Beijing to "get with the programme," arguing that China—which relies heavily on Gulf energy supplies—stands to benefit from reopening the critical Strait of Hormuz and stabilizing global oil markets.

"We are confident that everyone wants the Strait reopened, and for energy prices to come back down," Bessent said.

Strategic Shift from Kinetic Conflict

Administration officials have pushed back against suggestions that maximum economic pressure is a direct precursor to renewed large-scale military engagements. Bessent argued that financial isolation could reduce the likelihood of further military escalation, even as global oil prices reacted to the growing geopolitical strains.

"If we are doing the maximum economic pressure, then that means that likely there will not be a large-scale kinetic restart," Bessent noted.

Tehran Responds

Iranian leadership has vehemently condemned the U.S. announcements. Prior to Bessent's statements, Iran's Foreign Ministry dismissed the planned measures as "economic terrorism" designed to punish ordinary civilians. Officials in Tehran further criticized the threats as a domestic political distraction by Washington amid broader economic challenges.

Treasury Secretary Bessent is scheduled to hold a comprehensive press conference to outline the official framework of the new sanctions package.