The United States is preparing to unveil what Treasury Secretary Scott Bessent has described as an unprecedented new financial offensive against Iran on August 24, 2026, escalating economic pressure after nearly six months of war while Tehran threatens to stop oil exports across the Persian Gulf if Washington continues widening its economic campaign.
Bessent is scheduled to detail the measures at 2 pm Eastern Time, or 1800 GMT, meaning the precise targets were not yet public early on August 24 in India. He has signalled that the strategy will extend beyond Iranian entities towards foreign countries, companies or financial networks that continue sustaining Iran’s economy.
The confrontation has unusually high consequences for global energy markets because shipping through the Strait of Hormuz is already severely disrupted. Iranian officials have threatened to prevent all Gulf oil exports if the latest economic measures amount to an attempt to completely isolate Tehran, raising the possibility that sanctions intended to avoid another major military escalation could themselves intensify pressure on one of the world’s most important energy corridors.
What could Scott Bessent’s new Iran sanctions target on August 24?
Washington has not yet published the complete package, making it important to distinguish the announced strategy from specific sanctions that will only become known when Treasury releases them.
Bessent has indicated that the next phase will target countries and commercial actors that continue providing Iran with economic and financial support. China is particularly significant because it has historically purchased the majority of Iranian oil exported despite US sanctions, while financial intermediaries, shipping companies and commodity traders also enable Tehran to convert exports into usable foreign currency.
The Treasury Department has already been conducting a campaign known as Economic Fury. Recent actions have targeted Iran-linked shadow-banking networks, shipping operations, cryptocurrency exchanges, military procurement chains and foreign companies accused by Washington of facilitating Iranian transactions.
A much broader secondary-sanctions push could increase pressure on foreign banks and companies by forcing them to choose between doing business with Iran and maintaining access to the American financial system. That is one reason the final design of the August 24 measures may matter more than the number of Iranian entities added to an existing sanctions list.
Why is Iran threatening oil exports throughout the Persian Gulf?
Iran has responded by signalling that economic escalation could produce consequences for energy flows beyond its own exports.
Mohsen Rezaei, secretary of Iran’s Supreme National Security Council, warned on August 23 that if the economic confrontation continued, oil could be prevented from leaving not only through the Strait of Hormuz but elsewhere across the Persian Gulf. The statement represents an Iranian threat rather than confirmation that all Gulf exports have been stopped.
Hormuz carries strategically important oil and liquefied natural gas shipments from countries including Saudi Arabia, the United Arab Emirates, Qatar, Kuwait and Iraq. Even disruption affecting only a portion of normal traffic can raise freight rates, insurance costs and oil prices because traders begin pricing the probability of a wider interruption.
Iran has already severely constrained unauthorised tanker transit through the strait during the conflict, although some vessels have been allowed through selectively. That gives Tehran leverage despite the damage its conventional military has sustained during US and Israeli operations.
The risk for Iran is that threatening other countries’ exports could alienate neighbouring Gulf governments that have attempted to avoid being drawn directly into the conflict. Tehran therefore has to balance its ability to impose economic pain with the diplomatic cost of disrupting energy sales belonging to states that are not formal belligerents.
How much economic pressure has Washington already placed on Iran?
Iran entered the latest confrontation with decades of sanctions already constraining access to international banking, investment and technology.
The Trump administration intensified that pressure through measures targeting petroleum exports, military-linked companies, clandestine financial networks and third-country facilitators. Treasury said in early August that it had targeted networks across several jurisdictions that moved hundreds of millions of dollars through Iran’s shadow-banking system.
Other sanctions have targeted more than 50 individuals, companies and vessels linked by Washington to Mohammad Hossein Shamkhani’s shipping network, as well as foreign suppliers accused of facilitating Iranian weapons procurement.
Sanctions alone have nevertheless not produced the strategic outcomes Washington originally sought. Iran retains missile and drone capabilities, its nuclear programme remains difficult for outside inspectors to assess, and meaningful peace negotiations have not restarted.
That record explains why the next package carries political risk for the Trump administration. The United States is presenting greater financial pressure partly as an alternative to restarting intensive military operations, but economic warfare only serves that role if it changes Tehran’s calculations without provoking another escalation.
Why are China and other Iranian trading partners central to the next phase?
Sanctions against Iran become less effective when third-country companies continue purchasing Iranian commodities, processing payments or offering transportation services.
China is therefore central to the strategy because it provides the largest market for shipped Iranian oil. Washington can attempt to pressure Chinese refiners, banks, traders or shipping entities, but doing so risks creating a separate confrontation with Beijing.
The same logic extends to companies in other jurisdictions. Iran has built complex networks involving front companies, non-US currencies, precious metals, cryptocurrency and maritime intermediaries specifically because direct access to dollar-based financial channels is heavily restricted.
Secondary sanctions seek to make those routes commercially dangerous by extending the cost of dealing with Iran beyond Iranian entities themselves.
That can produce significant compliance effects even without prosecutions. International banks and shipping groups frequently abandon transactions when the potential cost of sanctions exposure exceeds the economic value of the business.
Could the new US sanctions push oil prices substantially higher?
Oil prices were already trading above levels seen before the latest escalation, although they slipped by around 1% early on August 24 as investors took profits ahead of Bessent’s announcement. Brent crude was around $93.45 a barrel and West Texas Intermediate around $86.14 in early Asian trading.
The immediate market reaction after the sanctions package is published will depend on whether it changes the practical availability of Iranian oil or threatens buyers and shippers much more aggressively than previous measures.
The larger risk remains physical disruption in Hormuz. A sanctions package can alter financial flows gradually, while a sharp reduction in Gulf tanker traffic can remove expected supply from markets almost immediately.
Washington is attempting to make economic pressure substitute for renewed military escalation. Tehran is responding by arguing that economic warfare can itself justify economic retaliation.
That leaves the August 24 announcement carrying consequences well beyond the Iranian banking system. The central question for energy markets is whether the next US sanctions wave squeezes Iran without triggering a response that makes the global oil supply problem substantially worse.
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