On September 27, US Treasury Secretary Scott Bessent offered an unusually categorical prediction about Iran's economic future. Iran, he said, would probably make its final oil deliveries to China within two weeks, after which it would have “nothing left to trade.”

He suggested that Washington's campaign to sever Iran's remaining economic lifelines was bringing the country towards an economic breaking point. The two-week window has now elapsed.

Reporting published on October 9 by The Washington Post described an American administration that had shifted towards a prolonged economic campaign after failing to achieve its objectives as quickly as it had anticipated.

The report also noted that Iran had continued oil sales and commercial activity despite the blockade, even as the restrictions imposed substantial costs.

The central weakness in Washington's calculations is not an inability to measure Iran's oil revenues, currency depreciation or import requirements, but an inadequate understanding of the economy through which those pressures must operate.

Iran is not an economy encountering comprehensive external restrictions for the first time. It has spent decades adapting to them.

Businesses have reorganized supply chains, manufacturers have substituted domestic products for imports, traders have developed alternative commercial relationships, and the state has accumulated experience managing scarcity.

These arrangements have changed the way economic pressure translates into domestic economic outcomes.

The central argument is that Iran's capacity to survive economic warfare cannot be measured by the damage that warfare inflicts. It must also be measured by the economic system that has evolved to absorb, redistribute and work around that damage.

That system is not fully understood. And therein lies the problem for anyone predicting its imminent collapse.

The conventional sanctions narrative often treats Iran as an oil exporter whose prosperity depends on maintaining access to global markets.

Restrict its oil sales, freeze its financial connections, obstruct its shipping and deny it access to advanced technology, and the economy will progressively lose the means to function.

Iran is far more than simply a large-scale oil-exporting enterprise. It possesses a substantial industrial base, agriculture, domestic commerce, transport networks, financial institutions and a large internal market.

Evidence from Iran's own industrial experience is especially revealing.

In a peer-reviewed study published in Development and Change in 2024, political economist Zep Kalb examined Iranian manufacturing between 2011 and 2021, drawing on industrial statistics, archival research and a detailed industrial case study.

The study documented substantial growth in output and value added among large industrial establishments during a period of severe sanctions.

Between Iranian years 2011–12 and 2021–22, real output increased by approximately 70 percent, real value added by 91 per cent, and industrial employment by 27 per cent.

These are historical findings, not measurements of the present wartime economy, but they directly challenge the proposition that severe sanctions necessarily dismantle a country's productive base.

The study also found that adaptation was uneven. Some industries benefited from domestic substitution, while sectors more dependent on foreign technology and imported components faced greater difficulties.

Food processing and chemicals gained importance as other parts of manufacturing struggled. The lesson is not that sanctions have been harmless. It is that their effects depend on the structure of the economy being sanctioned.

This is the first major weakness in a simple collapse model. It treats the economy as though every sector responds to the same external shock in the same way.

Iran's industrial experience suggests otherwise. Sanctions have helped create the economy they are now supposed to destroy.

Iran has spent decades dealing with precisely these restrictions.

The result is a more complicated ecosystem of formal and informal commercial arrangements, domestic substitutes, alternative suppliers, regional trading relationships and state interventions that has evolved under prolonged pressure.

Economist Djavad Salehi-Isfahani's research on Iranian trade adaptation has documented how sanctions changed the geography and composition of trade rather than simply eliminating it. Businesses sought alternative sources of imports and alternative destinations for exports.

The Financial Times examined these mechanisms in its March 29, 2026, report on Iran's wartime resistance economy.

It described domestic production, import substitution, barter, alternative trade routes and the decentralization of certain administrative decisions as elements of the country's response to conflict and isolation.

The report also described continued supplies of essential goods and the payment of civil-service salaries despite severe disruption. This is the kind of evidence that should be at the center of an assessment of Iran's economic stamina.

There is a substantial difference between a country that must invent alternative arrangements after a crisis begins and one whose businesses and institutions have already spent years developing them.

The paradox is that economic restrictions intended to isolate Iran have also provided an incentive for economic actors to reduce their dependence on the channels being restricted.

Sanctions therefore intended to weaken an economy simultaneously encourage forms of adaptation that complicate future attempts to weaken it further.

Washington's mistake with its emphasis on oil revenue is treating the loss of that revenue as if it were equivalent to the disappearance of the economy itself.

A loss of foreign exchange reduces the ability to purchase imported machinery, specialized industrial inputs, medicines, food commodities and other goods.

But domestic economic activity also includes transactions that take place in rials. Workers can continue working, shops can continue trading, domestic manufacturers can continue producing, and businesses can continue distributing locally available goods.

This distinction is particularly important in Iran, where domestic manufacturing and agriculture provide a significant degree of economic diversification that is not captured by a purely hydrocarbon-centered analysis.

The Financial Times report estimated that Iranian exports of steel products had been worth approximately $7 billion in the preceding Iranian year. It also discussed non-oil exports, including metals, chemicals and food products, as potential sources of foreign exchange.

The distinction between revenue and production matters here. A country may lose a substantial amount of export income while retaining the factories, workers, equipment and domestic distribution networks that generated other forms of economic activity.

There is another dimension that conventional economic assessments often struggle to capture and that is the practical knowledge of people conducting business and earning a living inside Iran.

The greatest analytical mistake would be to assume that because Washington can impose enormous costs on Iran, it can also dictate how quickly those costs translate into economic collapse.

The truth is that Iran’s economy has evolved under decades of sanctions and possesses more capacity to absorb and reorganize around those consequences than its adversaries have accounted for.