Treasury Secretary Scott Bessent on Monday, 24 August announced 'Operation Economic Outcast', a sweeping US campaign to sever Iran's global financial networks, warning governments and companies that they must choose between access to the American economy and continued dealings with Tehran. The ultimatum came with country-specific deadlines, though Bessent declined to name the nations approached or disclose the timeframes given.

The Core Ultimatum

President Donald Trump has personally begun calling foreign leaders with specific demands to end all interactions with the Iranian government, Bessent said. Teams from the Treasury, State, and War departments are following up with their counterparts in each country.

'Every country has a defined timeline to shut down activities we have identified,' Bessent said. 'If they do not take action, we will do so unilaterally through Treasury authorities.'

The warning covers banks, shipping companies, and other entities accused of helping Iran sell oil, move money, or circumvent existing restrictions. Any entity found facilitating money laundering for Iran, Bessent said, could be removed from the US dollar system entirely.

New Sanctions and Expanded Sectors

The US Treasury expanded the scope of possible secondary sanctions to five additional sectors of the Iranian economy: digital assets, technology, gold, aviation, and shipping. Simultaneously, Washington sanctioned nearly 60 entities, individuals, and vessels accused of enabling Iranian nuclear and missile procurement, cyber operations, and oil-revenue generation.

Bessent said the administration was aware of the identities of foreign institutions helping Iran convert oil into revenue, and that it preferred private diplomatic engagement before publicly imposing penalties — though he made clear that patience was limited.

'We do not have infinite patience here,' he said.

The 'Cure Period' and What Comes Next

Bessent described an initial 'cure period' — a window for governments and companies to end targeted activities before sanctions are formally imposed. He stressed, however, that the window would close quickly.

'We believe that it is important to level set and give people a cure period, but they should know that that will move very quickly and that we are serious,' he said.

He also indicated that a financial institution could be targeted before the end of the week, and that waves of sanctions would follow at a sustained pace. 'You will see a wave of sanctions when you leave this meeting today, and you should expect that cadence to continue,' Bessent said.

Strategic Framing and Global Stakes

The campaign marks a significant escalation in the Trump administration's maximum-pressure approach toward Iran, extending well beyond previous rounds of sanctions. Bessent framed the choice in stark terms: 'It is now a time for world leaders to make a decision between prosperity and isolation, peace and terror, America and Iran.'

He rejected criticism that Washington should have immediately sanctioned every identified foreign entity without offering time to comply, calling secondary sanctions 'a very powerful tool' that warranted a 'warning shot' first. Nations and companies that cooperate, he said, would benefit from the US partnership; those that do not 'should expect to share in the isolation of a withering regime.'

With the first round of designations already in place and further action promised within days, the global pressure campaign appears set to intensify rapidly in the weeks ahead.