Most geopolitical analysis focuses on who is winning and who is losing. Markets don’t really care about that. What they care about is whether the underlying system continues to function.

Modern cities are often described as economies, but in reality, they are dense, fuel-dependent supply chain systems. The network functions like a spiderweb with flows feeding the city at the centre. When those systems are stressed, the effects don’t stay local. They propagate.

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Cities run on energy, not money

Every major city operates as a layered logistics network. Almost every physical good requires multiple transport legs to reach its destination. In most cases, there are at least two trucking legs at the beginning of the process, rail or shipping somewhere in the middle, and at least one trucking leg at the end.

At nearly every stage of that chain, diesel sits underneath the system. Much of Australia’s regional freight rail still runs on diesel.

This applies to food, construction materials, manufactured goods and everyday consumer products. Remove or disrupt fuel, and the cost of moving almost everything rises with it.

Modern cities don’t run on money. They run on energy.

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The Qatar example

One of the clearest examples of this is Qatar.

A childhood friend of mine Jimmy, moved there to work on the sovereign wealth fund, and what stands out immediately is that it doesn’t function like a traditional city. It operates more like a space station on a desert outpost. Roughly 90% of the water comes from desalination plants, the environment is made habitable through constant air conditioning, and 90% of the food is imported.

Sustaining life there depends on continuous energy input.

If that input is interrupted, the system doesn’t degrade gradually. It becomes unstable very quickly. What looks like permanence is just a period of uninterrupted flow.

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The energy layer

Australia imports virtually all of its refined fuel from Asia, and virtually all of Asia relies on oil from the Middle East. When upstream energy systems are disrupted, the effects don’t remain contained.

Roughly twenty percent of global oil and fertiliser trade moves through the Strait of Hormuz. At the same time, key gas infrastructure linked to the world’s largest gas field shared by Qatar and Iran has been damaged. That system represents a meaningful portion of global LNG supply, and disruptions there are not resolved quickly. Repairs are measured in years, not weeks.

Iran has not fully closed the Strait of Hormuz. At present it is acting like a toll gate and the fact that it can selectively restrict access and threaten shipping routes is enough to change how risk is priced. Since oil is priced globally the system doesn’t need to stop completely to create pressure. It only needs to become less reliable.

Energy sits at the top of the supply chain. When it tightens, everything beneath it adjusts. Transport costs rise, fertiliser becomes more expensive, food production costs increase, and construction inputs move higher.

Builders are already talking about another increase in material costs of around 7%, on top of the 40–50% increases seen post-COVID. At the margin, that doesn’t just slow projects. It stops them. This obviously has downstream effects on building supply in Australia.

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The food constraint

Human population levels have exploded largely due to modern farming which produces an excess of food from relatively small plots of land. The population is only made sustainable by the conversion of energy into food.

Fertiliser is a core input into global agriculture, and it is heavily tied to energy markets as a by-product of energy production, particularly natural gas. The disruption of inputs such as fertiliser through the Strait of Hormuz means that food production becomes more expensive.

Once food costs rise, the pressure moves directly into household budgets and the CPI figure. This is one of the most direct transmission channels from geopolitics into everyday economic conditions.

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How the pressure moves through the system

The system operates in layers. Energy disruption sits upstream. Supply chains transmit that disruption. Costs rise across transport, food and materials. Households absorb the outcome.

Cities don’t fail overnight. What we see first is that they become more expensive to run.

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The property market layer

This is where the effects become more visible.

Construction feasibility was already under pressure. Material costs rose sharply post-COVID, labour remains tight, and valuations often lag replacement cost. Another increase in input costs pushes more projects below feasibility thresholds.

At the same time, higher energy and food costs reduce household disposable income, which limits borrowing capacity and demand.

This creates a dual constraint. Supply becomes harder to deliver, while demand becomes harder to express. Feasibility doesn’t degrade gradually; it disappears at the margin.

That’s when shortages persist, but the system can’t translate them into new supply. When that happens, the market doesn’t rebalance cleanly. It fragments.

This is occurring at a point in the cycle where macro conditions were already tightening. Borrowing capacity has been constrained by higher interest rates, listings have begun rising in some markets, and households have already been adjusting to higher costs.

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What geopolitics actually means

Geopolitics operates on two levels that are relevant to what we are discussing. The narrative layer moves quickly; it’s just information that travels at the speed of light driven by electrons through cables. We see this through headlines, positioning and interpretation. The physical layer moves more slowly, driven by the slow-moving sea lanes and energy input effects.

Markets ultimately respond to the physical layer. The key questions are whether energy can flow, whether goods can move, and whether production can continue.

Everything else is secondary.

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The illusion of stability

For the past few decades, much of the stability in parts of the Middle East has been underpinned by external guarantees. Security was reinforced by a dominant global power, aligned political interests and a financial system built around energy flows, largely the petrodollar system.

That combination created the conditions for cities like Doha, Dubai and Riyadh to grow rapidly. Capital flowed in, infrastructure expanded and those environments began to feel permanent.

But that stability was always conditional. It depended on uninterrupted energy flows, functioning trade routes and the assumption that key infrastructure would remain out of reach.

For the first time in modern history that assumption is being tested.

The knowledge that critical infrastructure can be targeted, and that energy corridors can be disrupted, changes how the system is perceived. These cities often present as permanent, but in many ways, they function more like highly developed outposts with Hermes shops. They’re sophisticated and capital-rich, but ultimately dependent on continuous external inputs.

The difference between a stable system and a fragile one is the continuity of those inputs.

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The long cycle

There are also signs of a broader shift as the world moves closer to multipolarity. It is becoming increasingly clear that the centre of gravity that has sat in the West for hundreds of years is beginning to drift East. The petrodollar system that helped underpin global energy trade is becoming less central, with some producers now transacting outside that framework.

This conflict is less constrained by cost-benefit logic than many of the conflicts seen in recent decades. Retaliation cycles combined with layered religious and ideological drivers make outcomes harder to model, which increases the likelihood of prolonged disruption rather than quick resolution.

Transitions between hegemonic powers have always been marked by conflict. Periods of relative stability tend to coincide with stable energy systems, trade flows and security arrangements. When those begin to fragment, the adjustment is rarely immediate and rarely clean.

Costs rise. Risk premia increase. Systems become less efficient.

These turning points occur once every one hundred years or so since the 1400s and the transition tends not to be defined by a single event, but by a series of disruptions that gradually reshape how the system behaves and how humans perceive risk and power dynamics. It seems clear that we are entering one of those periods again.

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What this means for you

What is interesting about this geopolitical inflection point is that it is occurring as we approach the later stages of the property cycle as defined by macroeconomic conditions. Historically, this phase is characterised by rising interest rates alongside continued price growth. So far, that pattern has held.

However, the structure of the market is now different.

Prices are significantly higher relative to incomes, which constrains where demand can express itself. At the same time, construction costs have risen materially through the COVID shock and are now being pressured again through energy markets. That keeps supply constrained.

The result is a system where both demand and supply are suppressed.

That doesn’t remove the underlying imbalance. It reduces the system’s ability to respond to it.

In practical terms, sourcing new stock that meets investment criteria becomes more difficult, while established stock in certain segments becomes more important.

The easier opportunities are likely to shift toward smaller markets and lower price points, where borrowing capacity can still clear transactions and supply remains constrained.

None of these changes the core investment thesis.

What changes is the path.

An additional energy shock layered on top of the pandemic shock accelerates the transition period. The adjustment doesn’t stop – it compresses the timeline.

From an analytical perspective, this is one of the more interesting periods to observe. The Australian property market has moved through far more disruptive conditions and continued to rise over the long term. The system will adjust this time as it always has.