Middle East war: Market and macro consequences
What began with cautious optimism late last week shifted abruptly into coordinated US and Israeli strikes by Saturday morning. The speed of escalation, and the uncertainty surrounding the next phase, mark a defining moment for the region with material implications for the global economy and financial markets.
The attacks on Iranian military, nuclear and political leadership targets, including reports of the death of Ayatollah Khamenei, amount to a systemic shock. Only days earlier, nuclear talks in Geneva had concluded with Oman citing meaningful progress. Washington clearly judged otherwise. The US objective now appears to extend beyond containment, with rhetoric from President Donald Trump and Prime Minister Benjamin Netanyahu pointing explicitly towards regime change. History offers limited reassurance that such transitions proceed in an orderly fashion. Power vacuums in the region have tended to produce fragmentation, internal conflict or hardline consolidation.
Tehran’s response was swift. Within hours, Iran targeted Israel, US installations in Bahrain, Kuwait and Qatar, and civilian infrastructure across the Gulf. Contingency plans were evidently in place. The situation remains fluid, but for markets the key question is stark: does this resolve quickly, or does it become a prolonged regional conflict?
Two scenarios for markets
Scenario 1: Short conflict, limited spillover
Under a contained outcome, strikes exhaust fixed targets within days and hostilities subside into a de facto ceasefire. Iranian retaliation remains calibrated to avoid provoking overwhelming escalation. Disruption to the Strait of Hormuz is limited, not least because Iran’s own oil exports rely on it.
For markets, this would resemble a familiar pattern: an initial spike in oil, a temporary war premium and then stabilisation as supply fears ease. The macro impact would likely prove transitory.
Scenario 2: Prolonged conflict, structural shock
A more severe path would see sustained strikes extending beyond military infrastructure, with Iran escalating through asymmetric channels. Persistent harassment of tanker traffic, renewed Houthi activity in the Red Sea and attempts to disrupt Hormuz would raise the risk of a historic supply shock.
Around 20 million barrels per day of oil and more than 100 bcm of LNG transit the Strait annually. Even partial disruption would have far-reaching consequences. In this case, oil could move towards $100 and beyond, equities would face a deeper correction and bond rallies might endure rather than reverse. Central banks would confront an acute policy dilemma between inflation and growth.
Global economic implications
Global trade: A shock at a fragile moment
The conflict hits a trading system already strained by tariffs and post-pandemic supply fragmentation. Even without a formal blockade, insurers are withdrawing cover, shipping costs are rising and vessels are rerouting. Airspace closures are disrupting Europe-Asia routes. A drawn-out conflict would combine higher energy costs with weaker confidence and impaired logistics, weighing heavily on trade volumes.
United States: Higher prices, policy tension
Although the US is less directly exposed to Hormuz trade flows, higher global oil prices would feed into domestic fuel costs at a politically sensitive time. A renewed inflation impulse would complicate the Federal Reserve’s policy path, particularly if tariff-related price pressures remain in train. While US energy producers benefit from stronger prices, that offset is unlikely to neutralise the broader drag on consumption and investment.
Eurozone: Acute exposure
Europe is particularly vulnerable. The region imports the vast majority of its oil and a substantial share of LNG. A sustained surge in prices risks reviving memories of the 2021–23 energy crisis. Unlike that episode, supply diversification has improved and the shock arrives at the end of winter. Nonetheless, the European Central Bank faces a difficult balance. Higher energy costs would lift headline inflation even as growth weakens under the combined weight of tariffs, uncertainty and tighter financial conditions.
Asia: Trade balances and inflation under strain
Most Asian economies are significant energy importers. Japan and the Philippines source close to 90% of their oil from the Gulf, while China and India remain heavily reliant on the region. Even absent physical disruption, a 10% rise in oil prices can materially weaken current account balances and add directly to consumer inflation. A prolonged shock would test central banks that had expected inflation to remain contained.
Financial market channels
In a short conflict, the dominant effects would be temporary: oil volatility, safe haven flows and then a return to the existing narrative of tariffs, growth differentials and technology-driven investment.
In a prolonged conflict, oil, uncertainty and policy constraint become the central themes. Crude prices could reach $100–140, with European gas prices also exposed if LNG supply losses persist. Sustained energy inflation would likely delay monetary easing, even if growth slows.
Initial safe haven flows would favour US Treasuries, Bunds and gold. On foreign exchange, a replay of early 2022 is plausible. The dollar could strengthen broadly against energy importers in Europe and Asia. The euro and yen would face persistent pressure, while heavily positioned emerging market carry trades could unwind sharply, reversing this year’s shift away from the dollar.
Energy supply risk versus 2022
The volume of oil at risk through Hormuz represents a materially larger share of global supply than the Russian barrels initially threatened in 2022. Inventories are more comfortable today, providing some buffer, but a sustained blockade would erode that cushion quickly.
In gas markets, potential LNG disruption is significant relative to global trade flows. Expanded US export capacity offers partial mitigation, yet near-term additions would not fully offset large-scale Gulf losses. In a tighter market, Europe and Asia would compete aggressively for cargoes, driving prices higher and amplifying the inflationary impulse.
The duration of hostilities will ultimately determine whether this episode proves a temporary shock or a structural turning point for the global economy.
