Scott Bessent, the U.S. Treasury secretary, is trending on Monday, August 24, 2026, after announcing a major expansion of economic sanctions against Iran. The administration says the campaign is intended to pressure Iran’s government, disrupt its access to international finance and help resolve the continuing conflict involving the United States, Israel and Iran.

Bessent called the initiative “Operation Economic Outcast” and described it as an “economic D-Day” against Iran. The measures target not only Iranian people and organizations, but also foreign companies, financial institutions and other entities that continue doing business with Tehran. The announcement comes as the Iranian rial reaches a new low and negotiations over the Strait of Hormuz remain unresolved.

The broad outlines of the announcement were reported by Axios and CBS News, while the Treasury Department’s recent sanctions releases provide background on the administration’s continuing “Economic Fury” campaign. The precise legal details and implementation timelines for Monday’s measures may develop as the Treasury Department publishes additional designations and guidance. ([axios.com](https://www.axios.com/2026/08/24/bessent-dday-iran-secondary-sanctions))

What Bessent announced

Bessent said the United States would expand the use of so-called secondary sanctions. These are penalties that can affect foreign companies or financial institutions that do business with a sanctioned country or entity, even when those organizations are not based in the United States.

In practical terms, the policy seeks to make companies and banks choose between maintaining certain commercial ties with Iran and preserving access to the U.S. financial system. Bessent said entities involved in laundering money for Iran could be removed from the dollar-based financial system.

The expanded sanctions categories include:

  • Digital assets: cryptocurrency exchanges and other platforms that may help move or conceal Iranian funds.
  • Gold: transactions and networks that use precious metals to store value or transfer money outside traditional banking channels.
  • Technology: suppliers and procurement networks connected to Iran’s military, missile, nuclear or cyber capabilities.
  • Aviation: companies and services that support restricted Iranian commerce or transportation.
  • Shipping: vessels, operators, insurers, brokers and other intermediaries involved in oil trading or sanctions evasion.

The Treasury secretary also announced sanctions against nearly 60 individuals, entities and vessels linked to alleged nuclear- and missile-technology procurement, cyber operations and oil smuggling, according to Axios. The administration also suspended several licenses that had allowed certain payments involving Iran and Iranian access to some U.S. cultural and academic institutions. ([axios.com](https://www.axios.com/2026/08/24/bessent-dday-iran-secondary-sanctions))

Why the announcement is drawing attention

Bessent’s announcement represents a visible shift in emphasis from military pressure toward financial coercion, although it does not mean military risks have disappeared. The sanctions were unveiled during a prolonged conflict and a diplomatic stalemate over the Strait of Hormuz, a strategic waterway through which a significant share of global energy shipments normally passes.

CBS News reported that talks between Iran and Oman about managing commercial shipping through the strait were expected to continue Tuesday. The report also said a previous U.S.-Iran memorandum of understanding had not produced a broader peace agreement by the end of its 60-day negotiating period. Both countries have declared that arrangement dead, leaving the status of future talks uncertain. ([cbsnews.com](https://www.cbsnews.com/live-updates/iran-war-us-trump-sanctions-strait-of-hormuz/))

The announcement is also attracting attention because the administration is trying to compel countries around the world to enforce the pressure campaign. Bessent said governments would receive defined timelines to stop certain Iran-related business. Countries and companies that do not comply could face secondary sanctions.

That creates a potential point of friction with major trading partners, particularly China. CBS News reported that China criticized the new measures and warned they could worsen tensions and disrupt global economic and financial stability. The report identified China as Iran’s largest buyer of oil before the conflict. ([cbsnews.com](https://www.cbsnews.com/live-updates/iran-war-us-trump-sanctions-strait-of-hormuz/))

What “secondary sanctions” mean

U.S. sanctions generally block designated people, companies or assets from the American financial system. Secondary sanctions go further by threatening consequences for foreign parties that continue specified transactions with a sanctioned country or organization.

For a foreign bank, the risk can be substantial. Losing access to dollar clearing or to U.S. correspondent banking relationships can make it more difficult to conduct international trade. For a shipping company, sanctions can affect insurance, financing, port access and the ability to work with global counterparties.

Secondary sanctions do not automatically end every transaction with Iran. Their effects depend on the specific legal authority, the people and organizations designated, any available waivers or licenses, and how aggressively the U.S. government enforces the rules. Companies often respond by conducting enhanced due diligence, ending relationships or avoiding transactions that could create sanctions exposure.

The economic backdrop in Iran

The new measures arrive as Iran’s economy is already under severe pressure. CBS News reported that the rial fell to about 2.02 million to the dollar on Iran’s informal market on Monday. The official central-bank rate was reported at about 1.5 million rials per dollar, but the informal rate is widely used by people and businesses outside the official system.

The currency had weakened before the current conflict, amid high inflation and weak economic growth, according to the CBS report. War-related disruptions and restrictions on oil exports have added to the pressure. Axios reported that the rial reached a new low and that the conflict had contributed to worsening shortages, inflation and difficulties moving goods and money. Those accounts describe the economic situation, but they do not establish that the new sanctions alone caused the currency’s latest decline. ([axios.com](https://www.axios.com/2026/08/24/bessent-dday-iran-secondary-sanctions))

Iranian officials have rejected the idea that additional U.S. sanctions will force the government to surrender. CBS News reported that Iran’s central-bank governor argued that the country had survived earlier “maximum pressure” campaigns and that Tehran had prepared for restrictions on exports. Iran’s foreign ministry also warned that the country would respond to the new measures.

Those statements reflect Iran’s official position, not an independent assessment of how much additional damage the sanctions will cause. The practical effects will depend on whether foreign governments and companies comply, how much oil and other goods Iran can continue to sell, and whether alternative payment and shipping routes remain available.

How this fits into the administration’s broader strategy

Monday’s action is not an isolated sanctions package. The Treasury Department has announced a series of Iran-related measures during 2026 under the administration’s “Economic Fury” campaign.

Recent Treasury announcements have targeted alleged Iranian oil-smuggling networks, shadow banking systems, digital-asset exchanges, shipping companies and procurement networks connected to military programs. Treasury said in June that it had sanctioned nine individuals and entities linked to weapons procurement for Iran’s Islamic Revolutionary Guard Corps and Ministry of Defense. In August, the department announced measures against networks it said helped Iran move hundreds of millions of dollars through clandestine currency channels.

Those designations show the administration’s preferred method: identify the intermediaries that help Iran sell oil, obtain technology, move money or access international markets, then block them from the U.S. financial system. Treasury officials argue that this approach can reduce the resources available to Iran’s military and security forces without requiring a new military operation. ([home.treasury.gov](https://home.treasury.gov/news/press-releases/sb0528?utm_source=openai))

What remains uncertain

Several important questions are not yet answered.

  • Who will be sanctioned next? Bessent said a major financial institution would be sanctioned by the end of the week, but the institution was not identified in the reports reviewed for this article.
  • How quickly will foreign governments comply? The administration says it will press countries to act immediately or within defined timelines. The response from China and other trading partners suggests enforcement could become diplomatically contentious.
  • Will the measures change Iran’s conduct? The United States says economic pressure can force Tehran to negotiate or reduce military activity. Iranian officials say earlier sanctions failed to achieve that goal. The outcome cannot be known at the time of publication.
  • What will happen to shipping? Negotiations involving the Strait of Hormuz are continuing, and any disruption there could affect energy markets and global commerce. The sanctions announcement is part of that wider crisis, but it does not by itself resolve the shipping dispute.

What readers should watch next

The next developments are likely to come from the Treasury Department’s Office of Foreign Assets Control, which publishes formal designations and compliance guidance. Those notices should clarify the names of sanctioned individuals, companies, vessels and financial institutions, as well as the legal authorities and any licenses or wind-down periods.

Readers should also watch for statements from China and other countries that buy Iranian oil or provide Iran with shipping, banking or technology services. Their decisions will help determine whether the campaign becomes a broad international pressure effort or remains primarily a U.S.-led enforcement operation.

Finally, the most important measure of the policy will not be Bessent’s rhetoric but its effects: whether Iran’s access to revenue and international finance is reduced, whether commercial shipping through the Strait of Hormuz becomes more stable, and whether the pressure produces negotiations rather than further escalation. At this stage, those outcomes remain uncertain.