Trump promised an economic onslaught against Iran

The United States promised another major escalation in its economic war against Iran.

Oil traders prepared for the consequences.

Then something unexpected happened.

Oil prices fell.

Brent crude dropped more than US$2 a barrel on Monday, settling at US$92.17, down 2.35 per cent.

West Texas Intermediate fell by the same percentage to US$85.01.

At first glance, that makes little sense.

Washington has announced additional sanctions against Iran.

The Strait of Hormuz remains severely disrupted.

Middle Eastern refinery capacity remains constrained.

Global petroleum inventories have been falling.

And the United States continues trying to restrict the flow of Iranian oil.

Normally, another sanctions escalation against a major petroleum producer would be expected to push oil higher.

Instead, traders sold it.

The explanation provides an important lesson about the Iran war and Australia's continuing fuel problem.

Markets care less about the language surrounding sanctions than about how many barrels those sanctions actually remove.

And for the moment, traders appear unconvinced that Washington's latest announcement will remove enough additional oil to justify another surge in crude prices.

Washington promised an economic onslaught

US Treasury Secretary Scott Bessent described the new campaign in characteristically forceful terms.

Washington is broadening the potential reach of secondary sanctions against countries and companies continuing to conduct business with Iran.

The campaign focuses on important parts of the Iranian economy, including shipping, aviation, technology, gold and digital assets.

Nearly 60 individuals, entities and vessels were included in Monday's measures.

That sounds substantial.

And it is.

But there is a critical distinction between creating the power to impose wider sanctions and immediately imposing those penalties on every important participant in Iranian trade.

That distinction is where the oil market concentrated its attention.

China was the obvious question

China is central to Iran's petroleum economy.

It has been Iran's largest oil customer.

If Washington wanted immediately to inflict maximum pressure on Iranian petroleum revenues, Chinese buyers and the financial networks facilitating their purchases would therefore be obvious targets.

But Washington stopped short of sanctioning major Chinese financial institutions in Monday's announcement.

Reuters reports the administration is wary of destabilising the global financial system and is conscious of the forthcoming meeting between President Donald Trump and Chinese President Xi Jinping.

That restraint matters enormously.

China can continue buying Iranian oil.

Iran can continue attempting to sell it.

And the United States retains the ability to escalate later.

The threat has increased.

The immediate physical supply shock has not necessarily increased by the same amount.

The oil market understood the difference

Oil traders do not buy political adjectives.

They buy and sell barrels.

The central questions are practical.

How much Iranian oil disappears?

How much crude continues reaching China?

How many tankers can move?

How much alternative supply exists?

How much oil remains in storage?

How much will refiners pay?

On Monday, the market's answer was effectively:

Not enough has changed yet.

Reuters reported that traders regarded much of the announcement as anticipated and questioned how much additional impact it would have unless major purchasers—particularly China—reduce Iranian crude imports further.

Hence the apparently contradictory outcome.

Washington escalated.

Oil fell.

This does not mean the sanctions are meaningless

That would be the wrong conclusion.

The United States has expanded the machinery available for future economic pressure.

Companies dealing with Iran potentially face an increasingly difficult decision:

maintain Iranian commercial relationships or preserve access to the vastly more important US dollar-based financial system.

For many international businesses, that is not much of a choice.

The American financial system provides Washington with enormous economic leverage.

But sanctions operate through behaviour.

The important question is what companies, banks, traders and governments actually do next.

Iranian exports are already suffering

Washington's existing pressure is having an effect.

Reuters estimates Iranian shipments to China fell to around 534,000 barrels a day in August, from approximately 823,000 barrels a day in July.

That is substantial.

Iranian crude traditionally offered Chinese independent refiners an attractive discounted feedstock.

As those barrels become harder to obtain, China has to look elsewhere.

Russia.

Iraq.

Brazil.

West Africa.

Other international suppliers.

That changes petroleum flows far beyond Iran.

And we have already seen the consequences in India

China's search for replacement crude has intensified competition for Russian oil.

India has depended heavily upon discounted Russian crude to feed its enormous refining industry.

When China buys more Russian barrels, fewer may be available to India—or India has to pay more to secure them.

That creates another potential problem.

India is not merely an oil consumer.

It is an important exporter of finished petroleum products.

If Indian refineries eventually receive insufficient crude, their production and exports of petrol, diesel and other products can suffer.

Australia participates in that same Asian refined-fuel market.

This is how sanctions against Iran can eventually travel far beyond Iran.

But crude oil is no longer Australia's whole problem

This is perhaps the most important point for Australian readers.

Brent falling from US$94 to around US$92 is welcome.

But Australians should not expect a corresponding collapse in petrol or diesel prices.

The reason is that the energy crisis has moved downstream.

Asia increasingly has a refined-fuel problem rather than simply a crude-oil problem.

Reuters estimates Asian imports of light and middle distillates during August are running about 21 per cent below pre-war levels.

Those are the products economies actually consume.

Petrol.

Diesel.

Jet fuel.

Crude oil has to be refined before it becomes useful to an Australian motorist, truck operator, farmer or airline.

Australia is succeeding in securing fuel

There is good news in those figures.

Australia has maintained fuel supplies much better than several poorer Asian economies.

Reuters notes that countries including Indonesia and the Philippines have suffered much sharper reductions in refined-product imports, while wealthier Australia has largely maintained supply.

That tells us something important.

Australia's fuel-security system is functioning.

Cargoes are arriving.

Service stations remain supplied.

Trucks continue operating.

Aircraft continue flying.

The feared widespread physical shortage has not materialised.

But there is a price for that success.

Australia can afford to compete

International petroleum markets ration scarce supply partly through price.

When diesel becomes scarce, buyers bid against one another.

Those capable of paying the market price secure cargoes.

Those unable to compete receive less.

Australia is a wealthy economy.

That gives us an enormous advantage during an international energy shortage.

But maintaining supply by paying more is not the same thing as escaping the crisis.

Australia may be winning the competition for fuel while simultaneously losing through the price it has to pay for it.

That distinction deserves much greater attention.

Diesel explains the problem

Singapore gasoil refining margins have risen to extraordinary levels.

Reuters puts the August margin at about US$71.29 a barrel.

That tells us the shortage exists beyond the oil well.

Crude can be available while diesel remains expensive.

A refinery needs the correct feedstock.

It needs to be operational.

It needs capacity.

It needs to produce the particular products consumers require.

The Iran war has damaged and disrupted refining capacity across the Middle East.

Russian refining has also been affected by attacks associated with the Ukraine war.

The result is an international refining system operating under extraordinary pressure.

Brent therefore tells only part of the Australian story

Australians understandably watch crude prices.

They are important.

But the Australian pump price depends upon much more.

International refined-product prices.

The Australian dollar.

Shipping.

Insurance.

Storage.

Wholesale margins.

Taxation.

Distribution.

Retail competition.

A US$2 decline in Brent is helpful.

It does not eliminate exceptional diesel refining margins.

Nor does it rebuild damaged refineries.

The market has another problem: its safety cushion is disappearing

There is also a reason not to become complacent about Monday's oil-price fall.

The world has spent months consuming the inventories that cushioned the original Iran shock.

Reuters Breakingviews estimates approximately 290 million barrels of the 400 million barrels released from emergency reserves have already been consumed.

Global inventories have fallen by roughly 300 million barrels since mid-July, while onshore stocks are estimated to be about 93 million barrels below normal seasonal levels.

That matters enormously.

Inventories buy time.

When supply falls, stored oil fills the gap.

But every barrel withdrawn today is one less barrel available to absorb tomorrow's disruption.

US$92 oil could therefore become a floor rather than a ceiling

That is one of the more interesting possibilities emerging from the latest market analysis.

Brent at US$92 looks comparatively reassuring after the much higher prices experienced earlier in the conflict.

But the conditions supporting that relative stability are weakening.

Emergency stocks have been consumed.

Commercial inventories are falling.

Hormuz remains constrained.

Refining margins remain elevated.

The war remains unresolved.

Reuters Breakingviews argues that today's elevated crude price could therefore become something resembling a new floor if supply conditions deteriorate further.

That should concern Australia more than Monday's daily price movement should reassure us.

Hormuz is still nowhere near normal

The sanctions announcement did not reopen the Strait.

Commercial shipping remains severely impaired.

Fewer than 20 commodity vessels crossed Hormuz during the weekend immediately preceding Monday's announcement.

Before the war, the Strait was one of the world's great commercial arteries.

Today, shipping companies still have to consider military danger, insurance, Iranian transit requirements, US sanctions and the possibility of detention or attack.

The underlying problem remains.

And Iran retains the ability to retaliate

This is the other reason markets may change direction quickly.

Iran has threatened responses to increased American economic pressure.

It has threatened Gulf energy infrastructure.

It has threatened alternative oil routes.

It is attempting to impose its own rules governing passage through Hormuz.

If Monday's economic announcement eventually produces a military or maritime response from Tehran, traders will reassess supply immediately.

Oil fell because the announcement itself did not remove enough additional barrels.

That does not mean the next consequence of the announcement will have the same effect.

Washington has deliberately kept another weapon available

The decision not to immediately target major Chinese financial institutions also leaves Washington with substantial escalation capacity.

That may be deliberate.

The administration can increase pressure gradually.

If Iran refuses to change course, Washington can threaten companies more directly.

If Chinese purchases continue, it can increase pressure on traders, refiners, banks or shipping networks facilitating them.

The economic weapon therefore has not necessarily failed.

It has not yet been fully fired.

China will determine much of what happens next

Watch Chinese Iranian oil imports.

That may be more useful than watching political rhetoric.

If Chinese imports continue falling sharply, Washington's campaign is working regardless of whether major Chinese banks are formally sanctioned.

If Iranian oil continues reaching China through alternative commercial networks, the sanctions may have less effect than their announcement suggests.

China's behaviour will also influence Russia and India.

Every Iranian barrel China loses potentially becomes another barrel it seeks elsewhere.

The repercussions spread through Asia.

Australia should watch diesel rather than Brent alone

For Australian readers, there is a similarly useful indicator.

Watch regional diesel and jet-fuel prices.

A falling Brent price accompanied by persistently extreme refining margins tells us Australia's problem has not disappeared.

If crude falls and Asian refining margins fall, that is much better news.

It would suggest both the raw-material market and the finished-fuel market are beginning to normalise.

We are not there yet.

The RBA will care about the distinction

This matters because Australian inflation responds to the price businesses and households actually pay.

The Reserve Bank does not target Brent crude.

It cares about Australian inflation.

If diesel remains expensive, freight remains expensive.

If freight remains expensive, businesses face higher costs.

If jet fuel remains expensive, aviation faces higher costs.

If petrol remains expensive, households have less disposable income.

The international crude benchmark can fall while domestic inflationary pressure remains.

That is precisely why the refined-fuel shortage deserves attention.

There is a positive interpretation

Monday's market reaction should nevertheless be recognised as good news.

A feared immediate sanctions shock did not materialise.

Brent fell.

Washington avoided measures that could have produced a sudden confrontation with China's major financial institutions.

Iranian crude has not disappeared entirely.

International oil continues moving.

Australia continues obtaining fuel.

Those are meaningful positives.

The energy system remains remarkably resilient.

But resilience is being purchased

That has been the recurring theme of the Iran crisis.

The world finds another barrel.

Another tanker.

Another route.

Another refinery.

Another supplier.

Another financial mechanism.

The system continues functioning.

But each solution costs something.

Australia's experience illustrates the point beautifully.

We have largely maintained fuel supply.

But we are paying international scarcity prices to do it.

That is resilience.

It is not normality.

The Times View

Washington promised another dramatic escalation in its economic campaign against Iran.

Instead of surging, Brent crude fell more than US$2 to US$92.17 a barrel.

There is no contradiction once we understand what markets were measuring.

The United States expanded its sanctions architecture and targeted dozens of individuals, entities and vessels.

But it did not immediately impose the sweeping penalties on major Chinese institutions that could have transformed Iranian oil supply overnight.

The market therefore judged the barrels.

Not the rhetoric.

For Australia, that is encouraging—but only up to a point.

Our immediate vulnerability is increasingly not simply the price of crude oil.

It is the availability and cost of the finished fuel made from it.

Asian refined-product imports are running around 21 per cent below pre-conflict levels. Australia has largely maintained its supplies, unlike some poorer economies in the region, but the cost of securing those supplies remains high.

Meanwhile, the world's petroleum cushion is being consumed. Emergency reserves are dwindling and commercial inventories have fallen sharply.

So Monday gave Australia some good news.

The feared sanctions shock did not arrive.

Oil fell.

But the deeper fuel crisis remains.

Australia is demonstrating that it can afford to keep the fuel coming.

The question is increasingly not whether we can obtain it.

It is how long we can keep paying the price required to secure it—and how much of that price eventually appears in freight, food, aviation and inflation.

That is why a US$2 fall in Brent is welcome.

It is not yet the end of Australia's Iran-war fuel problem.