The global economy is entering an unusually unstable phase: an eight-month US-Israeli-led war with Iran has disrupted energy markets just as governments are carrying record debt and investors are pouring money into artificial intelligence. The result is not yet a synchronized global crisis, but a contest between two forces—war-driven supply shocks and technology-led investment—that will shape growth, inflation and political stability through 2027.
The immediate pressure point is the Strait of Hormuz, through which roughly one-fifth of the world’s oil normally passes. Its closure has pushed up fuel and fertilizer costs, threatening to transmit the conflict far beyond the Middle East. Reuters reported that the IMF and World Bank meetings in Bangkok were expected to focus on the inflationary consequences of the war, while the World Bank warned that pressure was building despite stronger-than-feared growth.[1]
A fragile headline resilience
The IMF now expects global output to grow by 3.1% in 2026, an improvement on its July estimate of 3%, but still below last year’s 3.5% expansion. Inflation, meanwhile, is projected at 4.7% this year before easing to 4.1% in 2027.[2] Those figures suggest resilience, but they also conceal uneven exposure. Oil-importing economies face higher transport and food costs, while poorer countries have less fiscal room to subsidize consumers or protect investment.
The IMF has warned that public debt is at its highest level since the Second World War and could exceed 100% of global GDP before 2030. Advanced economies account for much of the debt, but emerging and low-income countries are more vulnerable to capital outflows, higher US interest rates and rising import bills.[1] A prolonged energy shock could therefore create a widening split: wealthy governments may absorb part of the damage, while poorer states face currency pressure, reduced public services and renewed food insecurity.
Why AI is cushioning the blow
Artificial-intelligence investment has become the principal counterweight to the war shock. Spending on data centers, chips, power systems and software is supporting demand in the United States and China and helping sustain global capital expenditure. The IMF’s improved growth forecast reflects that investment, alongside fiscal support.[2]
Supporters argue that AI could raise productivity, improve logistics and eventually reduce the economic impact of supply disruptions. An FT survey of 94 economists found expectations that the technology’s benefits could extend beyond the United States and China.[3] If businesses use AI to optimize energy use, manage inventories and automate routine work, the investment boom may become a broader productivity cycle rather than a short-lived market enthusiasm.
But the optimism has limits. AI investment is concentrated among a small number of companies and countries, and its benefits may arrive later than the costs of higher fuel and food prices. Developing economies often lack the electricity, financing and technical infrastructure needed to participate. The same boom can also increase demand for power and equipment, intensifying competition for energy and strategic technologies.
The political economy of the shock
Central banks face an uncomfortable choice. Raising interest rates can prevent temporary energy inflation from becoming embedded in wages and expectations, but it also makes heavily indebted governments and businesses more vulnerable. Keeping rates lower may support employment and investment, yet risk prolonging inflation. Recent forecasts cited by ABN AMRO suggest the Federal Reserve, European Central Bank and Bank of England may remain hawkish as energy prices rise.[4]
Governments also face competing demands. Subsidies can shield households but deepen fiscal deficits; removing them can trigger protests and accelerate political change. France’s GDP is expected to grow only 0.4% in 2026, while energy-price inflation rose sharply in September, illustrating how the shock can combine weak growth with a high cost of living.[5]
The conflict’s duration is the decisive variable. The IMF reportedly assumes that Hormuz will reopen in March 2027 and return to normal by October. That forecast is not a prediction of peace so much as a baseline for economic planning.[2] A quicker reopening could bring oil prices down and restore confidence. A longer closure would raise the probability of recession, debt distress and political backlash.
What comes next
Three developments deserve close attention: the physical flow of oil through Hormuz, whether AI investment spreads beyond a handful of technology leaders, and whether governments coordinate debt relief and food-security support. A strengthening El Niño could add another layer of disruption to agriculture, logistics and energy systems into 2027.[6]
The central risk is not that any single shock overwhelms the world economy immediately. It is that several manageable pressures reinforce one another: expensive energy raises inflation, inflation keeps interest rates high, high rates worsen debt burdens, and weakened public finances limit investment in resilience. AI may soften that chain, but it cannot substitute for secure trade routes, credible diplomacy and fiscal capacity.
For now, the global economy is growing—but on increasingly narrow foundations. The next year will test whether technological optimism can become widely shared productivity, or whether war, climate stress and debt expose the limits of a recovery that has so far looked stronger on paper than it feels to households.