Treasury opens 'Operation Economic Outcast' with five Iran sector determinations

The Treasury Department announced on 24 August 2026 that it had begun “Operation Economic Outcast,” which it described as “an unprecedented, whole-of-government, economic campaign against the Islamic Republic of Iran and its enablers,” undertaken “at President Trump’s direction.”¹ Secretary of the Treasury Scott Bessent said the campaign’s objective is “to sever every economic lifeline that sustains this tyrannical regime until Tehran stands alone,” adding: “Those who stand with the United States will reap the rewards of our partnership. Those who tether themselves to Tehran should expect to share in the isolation of a withering regime.”¹ The announcement listed four actions: determinations against “five critical sectors — digital assets, technology, gold, aviation, and shipping”; designation by the Office of Foreign Assets Control of “nearly 60 entities, individuals, and vessels in multiple jurisdictions”; suspension of “several general licenses that previously authorized certain remittance payments to Iran and Iranian access to the U.S. cultural and academic system”; and guidance “on the sanctions risks of bowing to Iranian demands related to shipping in the Strait of Hormuz.”¹ Treasury said teams from the Departments of Treasury, State and War are engaging counterparts worldwide and that “every country will be given a defined timeline to shut down the Iran-related activity we have identified. If they fail to act, Treasury will act.”¹

1. The sector determinations and the designations rest on different instruments. Executive Order 13902 authorises the Secretary of the Treasury to identify sectors of the Iranian economy in which operation itself becomes a designation predicate, and Treasury said the five new determinations “build on similar determinations targeting Iran’s financial and petroleum and petrochemical sectors.”¹² The day’s designations were made under four authorities — Executive Orders 13382 on proliferation, 13694 as further amended on malicious cyber activity, 13902, and 13224 as amended on terrorism — reaching a procurement network supplying Iran’s Ministry of Defense and Armed Forces Logistics, cyber actors directed by the Ministry of Intelligence and Security, and a shadow-fleet shipping network spanning the United Arab Emirates, Hong Kong, China, Singapore, Switzerland and Europe.¹ Treasury said the action was coordinated with the Federal Bureau of Investigation, which on 18 August 2026 announced the unsealing of a superseding indictment charging 17 Iranian cyber actors, four of them designated on 24 August.¹

2. The designations rest on an authority the Supreme Court left intact; the tariffs the President has threatened against Iran’s trading partners do not. Each of the four executive orders is grounded in the International Emergency Economic Powers Act.¹² In Learning Resources, Inc. v. Trump the Court held that IEEPA’s authority at 50 U.S.C. § 1702(a)(1)(B) to “regulate … importation” does not authorise the President to impose tariffs; the blocking authority on which designations depend appears in the same subsection in different terms, among them the power to “block during the pendency of an investigation” and to “prevent or prohibit” transactions in property (see Supreme Court holds IEEPA does not authorise tariffs).³⁴ Reuters reported that the President has threatened tariffs on goods from countries doing business with Iran, including Turkey, Iraq and India, “although the Supreme Court struck down the legal basis for such taxes.”⁵ Sections 232, 301 and 338 remain available, each with its own procedural machinery.⁵

3. The Hormuz guidance places shipowners between two enforcements. Reuters reported that Iran has warned vessels not to transit the strait without its permission, listing 45 ships it said had violated its rules and threatening retaliation for ship-to-ship transfers with them; Treasury’s guidance addresses “the sanctions risks of bowing to Iranian demands related to shipping in the Strait of Hormuz.”¹⁵ An operator that seeks Iranian clearance to transit incurs United States sanctions risk, and one that does not incurs the risk Iran has described; the guidance does not create a third option.¹⁵ Attacks on shipping have also continued away from the strait: Reuters reported that a projectile struck a tanker west of the Saudi port of Yanbu in the Red Sea on 24 August, causing a fire on the main deck according to United Kingdom Maritime Trade Operations, and that the Houthis said they had attacked a vessel in the area (see Two weeks after ceasefire collapse, Houthis embargo Saudi-bound shipping).⁵

4. Suspending the general licences reaches Iranians rather than the Iranian state, and the campaign runs alongside an attempt at talks. The licences withdrawn had authorised “certain remittance payments to Iran and Iranian access to the U.S. cultural and academic system” — categories that run to individuals rather than to the government.¹ Their withdrawal arrives while the campaign’s stated theory is that the regime “faces a clear choice: severe global isolation or a path to reintegration with the global economy.”¹ Reuters reported that Pakistan’s army chief, Asim Munir, was in Iran on 24 August for talks, that President Trump had called him the previous week — a call the White House confirmed without commenting on its substance — and that two Pakistani sources described the main request as bringing Iran back to negotiations; Reuters also reported that the United States and Iran had not conducted air strikes on each other’s militaries for weeks and that their last direct talks took place in June.⁵ Bessent declined to identify the countries to be given timelines; asked about Chinese banks he said “no one is above the reach of U.S. sanctions,” and China’s foreign ministry said sanctions and pressure do not help and that Beijing would do what was necessary to protect its interests.¹⁵