The Iran war launched by the US and Israel in early March 2026 has already inflicted substantial, and in many respects structurally durable, damage to the global economy, regional security architecture, and the long‑term reputation of the Gulf as a stable energy hub. Analysts at the International Energy Agency, Chatham House, and major investment banks describe the conflict as producing the largest energy‑supply shock since the 1970s, with approximately 15–20 per cent of global oil and gas flows effectively blocked or rerouted by the closure or militarisation of the Strait of Hormuz, while the UK’s independent Office for Budget Responsibility warns of lasting inflationary pressure and slower growth if the disruption persists. The war has also deepened the geopolitical fracture between the US‑led bloc and China‑backed powers, strengthened discourses of de‑globalisation, and exposed the fragility of just‑in‑time supply chains now dependent on an increasingly volatile Middle East.
Economic and financial‑market damage
The clearest lasting damage so far has been to global energy markets and the macroeconomic frameworks of net‑importing economies. Brent crude surged from roughly 70 dollars a barrel to the low‑to‑mid 80s in the first week, while liquefied natural gas (LNG) and pipeline‑gas prices in Europe spiked by around 40 per cent, with UK wholesale gas prices almost doubling over a few days, even before the next energy‑price‑cap review in July. Stock markets globally have already absorbed significant losses: the FTSE‑100 in London, the STOXX‑600 in Europe, and major Gulf indices such as Saudi Arabia’s Tadawul have all shed multiple percentage points since the war began, eroding household and pension‑fund wealth and tightening risk premiums across credit markets. The International Monetary Fund and private‑sector forecasters now expect lower global growth for 2026, with the risk of stagflation, higher inflation combined with weaker output, particularly for Europe and the UK, where households remain highly exposed to wholesale‑energy‑price movements despite existing price caps and windfall‑tax mechanisms on North Sea producers.
Physical infrastructure and social-human cost
On the ground, the physical and human damage inside Iran and its neighbours is already severe and is likely to shape the region’s development trajectory for years. US‑Israeli air and missile attacks have reportedly hit more than 6,000 civilian‑related sites, including thousands of residential buildings, hundreds of commercial units, dozens of schools and medical centres, and numerous Iranian‑Red‑Crescent‑affiliated facilities, with Iranian state and humanitarian‑sector sources recording well over a thousand civilian deaths and many more injuries, including hundreds of children. Energy infrastructure across the Gulf has also suffered long‑term setbacks: Ras Laffan in Qatar, one of the world’s largest LNG‑processing hubs, reported “extensive damage” from Iranian strikes, forcing the declaration of force majeure on gas exports and likely requiring months of repair; the United Arab Emirates and others have shut or throttled gas and oil‑processing operations, further tightening the global supply‑curv. If the conflict persists beyond a few months, Chatham House and similar institutions project that Iranian GDP could contract by more than 10 per cent, while Gulf economies dependent on tourism, foreign labour mobility, and safe commuter-air and seaplanes, including the UAE and Qatar, risk sustained capital flight and a reputational blow that may endure well beyond any formal ceasefire.
Geopolitical‑legal and long‑term‑structural shift
Beyond immediate economic and physical scars, the Iran war has already pushed the world economy toward a more fragmented, sanctions‑heavy, and energy‑security‑obsessed order. The systemic targeting of energy infrastructure by both sides has effectively turned the Gulf into a semi‑permanent battlefield, which in turn encourages states to internalise more of their supply chains, stockpile strategic reserves, and re‑regulate cross‑border finance and energy‑flows under strengthened national‑security‑and‑sanctions‑law frameworks such as the UK’s Sanctions and Anti‑Money Laundering Act 2018 and its EU‑derived counterparts. The UK and Europe, already reeling from previous energy‑shocks linked to the Nord Stream pipeline attacks and the Russia‑sanctions regime, now face a second, larger disruption that may force a structural re‑evaluation of how much they can rely on Middle‑Eastern energy and how much they must invest in domestic renewable capacity and liquefied fuel diversification, even if such investments cannot yield immediate price relief. Viewed in cold terms, the lasting damage is therefore threefold: a measurable, front‑loaded hit to global growth and financial‑asset values; a deep and partly reversible erosion of Iranian and Gulf‑regional‑infrastructure and human‑capital; and a more enduring drift toward a less integrated, more militarised‑energy‑order where the risks of any future Middle‑Eastern conflict will be discounted into capital costs, trade‑routes, and monetary‑policy‑calibrations for decades to come.