The Iran War and Its Impact on Global Growth and Inflation

From late February to early March 2026, the United States and Israel launched military actions against Iran, triggering a conflict that swiftly reverberated across the global economy. The escalation placed additional strain on an already tight energy market. The Strait of Hormuz, a critical oil transit chokepoint, was effectively closed for a period, pushing Brent crude prices from around USD 70 to above USD 80 per barrel, with an intraday high of approximately USD 82 per barrel as of March 3. The sharp rise in oil prices intensified global inflationary pressures, particularly for economies heavily dependent on energy imports, as production and transportation costs increased. Meanwhile, volatility in equity and foreign exchange markets widened, prompting capital flows into safe-haven assets such as the U.S. dollar and gold. Aviation, tourism, and consumer-related sectors came under pressure, adding further uncertainty to the global economic recovery outlook.

The economic impact of the conflict can be explained through three primary transmission mechanisms. First, the Middle East serves as a central hub for global energy supply, with roughly one-fifth of the world’s crude oil and liquefied natural gas shipments passing through the Strait of Hormuz. Any disruption to this route directly increases risk premiums in the energy market. According to Goldman Sachs, if the disruption were to last more than four weeks, oil prices could reflect an additional risk premium of approximately USD 14 per barrel. Second, rising energy prices transmit through the economy via cost pass-through effects, affecting manufacturing, transportation, and food production, thereby pushing up end-consumer prices and compressing corporate margins. The European Central Bank has warned that a prolonged conflict could exacerbate inflationary pressures and suppress output. Third, heightened geopolitical uncertainty has triggered a reallocation of global capital flows. Emerging market currencies and equities have weakened, while demand for the U.S. dollar and U.S. Treasuries has increased, tightening global financial conditions and amplifying market volatility.

In the short term, if tensions de-escalate quickly and normal navigation through the Strait of Hormuz resumes, oil prices and financial market pressures may partially ease, allowing inflationary and supply chain risks to gradually subside. However, if the conflict expands to include broader energy infrastructure or additional maritime routes, upward pressure on energy prices could persist over the medium to long term, posing a deeper drag on global economic growth. Analytical institutions estimate that a sustained USD 10 increase in oil prices could reduce global GDP growth by approximately 0.1 to 0.2 percentage points, with emerging markets facing more pronounced impacts. Under such circumstances, central banks may reassess their monetary policy stance in response to inflation risks, while corporations and investors adopt a more cautious approach to risk allocation. Over the coming weeks to months, the trajectory of geopolitical developments and the balance of energy supply and demand will remain key determinants of the global economic outlook.

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