The US-Israeli war on Iran has already produced a surprisingly long list of unintended consequences. Shipping routes have been disrupted. Supply chains have come under pressure. Oil markets have endured months of turbulence.

Diplomatic relationships have been strained. International organisations have warned that higher energy and transport costs could worsen food insecurity across vulnerable regions. Yet another question is now beginning to emerge in financial markets. Could this conflict also be interfering with the very interest-rate cycle that helped fuel the artificial-intelligence boom?

At first glance, the connection appears tenuous. One concerns geopolitics and energy markets.

The other concerns technology, venture capital and equity valuations. Yet financial markets rarely separate developments as neatly as investors do.

Energy prices remain highly sensitive to developments around the Strait of Hormuz.

Although crude has retreated from its peaks whenever reports of diplomatic progress emerge, traders continue reacting sharply to headlines from the region.

Around a fifth of globally traded oil normally passes through the waterway, and even temporary disruptions can reverberate through inflation expectations, bond markets and central-bank thinking.

That matters because oil has a habit of leaking into every other price in the economy.

Higher fuel costs eventually influence freight, manufacturing, fertiliser, aviation and food.

Central banks can often look through short-term volatility. Sustained energy shocks are considerably harder to ignore.

Before the conflict, investors broadly anticipated a significantly easier monetary-policy path.

The debate centred largely on the pace of future rate cuts. Inflation appeared to be moderating. Financial conditions remained supportive.

The assumption underpinning much of the optimism in financial markets was that the era of aggressive monetary tightening was drawing to a close.

The Iran war complicated that outlook.

Bond yields have moved higher as markets reassess inflation risks and the possibility that central banks may need to remain restrictive for longer than previously expected. Rate-cut expectations have become less certain.

The discussion is no longer focused solely on how quickly policymakers can ease.

Investors are again debating how persistent inflationary pressures may prove to be if energy markets remain vulnerable to geopolitical shocks.

And that shift may ultimately matter more for technology valuations than any single earnings report.

The AI boom has depended on extraordinary optimism about future growth. Investors have been willing to value companies on earnings projections stretching many years into the future.

That process becomes more difficult when the cost of money rises. Higher interest rates reduce the present value of future cash flows.

They also increase the hurdle rate for the enormous sums now being committed to AI infrastructure.

The scale involved is remarkable. Major technology companies continue committing hundreds of billions of dollars to data centres, chips, energy infrastructure and AI development.

Analysts have projected trillions of dollars of cumulative AI-related investment over the coming decade.

At the same time, some of the most anticipated technology listings in the world are expected to command valuations measured in the trillions.

None of this proves that a bubble exists. Artificial intelligence may ultimately justify every dollar being invested in it. Productivity gains could exceed expectations.

Entire industries may be reshaped. Revenue growth may eventually validate today’s aggressive forecasts.

Yet has the market perhaps become accustomed to asking only one side of the question?

For years, economists, traders and academics have debated whether the AI boom contains elements of speculative excess. The disagreement was rarely about the technology itself.

The real argument concerned valuation, expectations and timing. If enthusiasm eventually outran reality, what would expose it? What event could force investors to revisit assumptions that had become deeply embedded in market pricing?

Few would have pointed to a conflict in the Middle East.

Yet an energy shock that alters the interest-rate outlook can eventually reshape the pricing of assets that appear entirely unrelated to oil.

A disruption in one corner of the global economy often exposes vulnerabilities elsewhere.

Markets that were comfortable with pricing years of future growth under one set of monetary assumptions may suddenly find themselves operating under another.

Recent market behaviour suggests investors are at least beginning to grapple with that possibility.

Technology shares have become noticeably more sensitive to interest-rate expectations. Bond-market moves increasingly command as much attention as corporate earnings announcements.

Strong economic data that might once have been welcomed now sometimes triggers concern because it reduces the likelihood of near-term monetary easing.

Could that be the signal worth watching?

Perhaps the AI rally resumes its ascent, and this latest scare fades into memory. Perhaps diplomacy succeeds, oil prices stabilise, and inflation pressures ease.

Perhaps central banks regain the flexibility investors expected at the start of the year.

But if the Iran war has already exposed vulnerabilities in supply chains, energy markets, diplomatic relationships and inflation expectations, is it unreasonable to ask whether it may also have disturbed the foundations supporting the market’s most crowded trade?

That may ultimately be the most ironic consequence of all. A war launched for geopolitical reasons could end up influencing the financial conditions that helped sustain one of the greatest investment booms of the modern era.

The question is whether markets are witnessing a temporary interruption to the AI story, or the beginning of a broader reassessment of the assumptions that made the story possible in the first place.