The 2026 Iran conflict has crossed from geopolitical event to global economic shock. The International Energy Agency has characterised the disruption as the largest supply disruption in the history of the global oil market. Brent crude surged from $71 per barrel on 27 February 2026 to above $120 at its peak following the closure of the Strait of Hormuz on 4 March. The IMF has warned that if elevated oil and gas prices persist for the remainder of the year, global GDP growth could be reduced by 0.3 percentage points. Energy importers face greater exposure than exporters, poorer countries more than richer ones, and businesses with thin margins face risks that well-capitalised organisations can absorb. The window for strategic action is now — not when the conflict resolves.
WHAT IS ACTUALLY HAPPENING
On 28 February 2026, the United States and Israel commenced military operations against Iran. Within two trading days, Brent crude jumped 8% from $71.32 to $77.24 per barrel. As the conflict deepened and Iran targeted energy infrastructure across the Gulf, prices broke $100 and at one point exceeded $120 per barrel.
The most consequential single event was the closure of the Strait of Hormuz on 4 March 2026. Approximately 25% of the world's oil is shipped through the Strait. It also carries 20% of global LNG flows — primarily Qatari exports destined for Asian markets including China. QatarEnergy declared force majeure on all exports. Iran struck Saudi Arabia's Ras Tanura refinery — the world's largest oil export terminal, handling 550,000 barrels per day — and UAE's Ruwais refinery via drone strikes.
The knock-on effects moved rapidly beyond oil. Natural gas prices in Asia and Europe spiked more than 30%. Fertiliser trade was disrupted — Iran is a major exporter of the inputs that feed global agriculture. Shipping routes were restructured. Investor confidence deteriorated across emerging markets. Ten-year US Treasury yields rose 31 basis points between the start of the conflict and 12 March.
A two-week ceasefire has since eased the most acute pressures, but energy prices remain 30-40% above pre-war levels. Markets are highly sensitive to any resumption of hostilities. The WEF has described the economic architecture of the conflict as exposing a fundamental contradiction: the US has imposed costs on many of the same economies it relies on as trading and strategic partners.
THE STAGFLATION RISK
The IMF has flagged the most serious medium-term economic risk explicitly: stagflation. The combination of energy-driven inflation and conflict-driven demand destruction creates a scenario where central banks face inflation they cannot suppress through rate rises — because the growth slowdown is already underway. This is the pattern of the 1970s energy crisis, and multiple analysts have made the comparison explicit.
For the Federal Reserve specifically, the conflict has complicated an already difficult decision. Any increase in inflation from elevated oil prices, however temporary, could prevent the rate cuts that the weakening US labour market is beginning to require. The Fed's dual mandate — price stability and maximum employment — is being pulled in opposite directions by the same event.
WHY IT MATTERS TO BUSINESS LEADERS
The commercial implications of the 2026 Iran conflict operate at five distinct levels.
Energy costs are the most immediate. Any business with material energy expenditure — manufacturing, logistics, data centres, retail with significant distribution — is facing input cost increases that were not in any 2026 budget. The question is not whether to respond but how: through pricing, through hedging, through energy efficiency investment, or through absorbing the margin impact while competitors cannot.
Supply chain exposure is the second dimension. The Strait of Hormuz disruption has created cascading effects across supply chains that transit the Gulf or depend on Gulf-sourced materials. Fertiliser prices affect agricultural input costs globally. LNG price spikes affect energy costs in Asia and Europe. Shipping route changes add time and cost to every cargo moving through the region.
Currency volatility is the third. Conflict-driven commodity price spikes tend to strengthen commodity-exporting currencies and weaken importing ones. For businesses with multi-currency operations, the current environment has added a foreign exchange dimension to energy and supply chain exposure simultaneously.
Demand uncertainty is the fourth. The WTO has warned that sustained high energy prices will reduce consumer purchasing power globally — affecting demand in import-dependent markets precisely when supply costs are rising. The margin squeeze is bilateral.
The fifth and least discussed is the political risk to business relationships. The WEF's observation that the conflict has created costs for US allies and trading partners is not abstract. It affects the commercial relationships, investment decisions, and regulatory environments in which multinational businesses operate.
Deloitte's analysis explains how Middle East conflict could place renewed pressure on global supply chains, energy prices, inflation, trade and business confidence — making it essential reading for leaders watching geopolitical risk.
STRATEGIC TAKEAWAYS
- Model three energy scenarios, not one. Model what your business looks like if energy prices stabilise at current levels (30-40% above pre-war), fall back toward pre-conflict levels if a durable ceasefire holds, and escalate further if hostilities resume. Each scenario has different implications for pricing, hedging, and capital allocation.
- Review your Gulf supply chain exposure this week. Map every material, component, or product that moves through or originates from the Gulf region. Identify the alternatives and their lead times before you need them under pressure.
- Assess your energy hedging position. If you have not reviewed your energy procurement and hedging strategy since February 2026, it is now materially misaligned with the current price environment.
- Do not treat the ceasefire as resolution. Markets are highly sensitive to resumption of hostilities. A pause in fighting is not the same as a structural resolution of the conflict. Build your planning assumptions around a persistent elevated-risk environment, not a return to pre-conflict normality.
- Watch the Fed. The conflict's inflationary impact is the primary variable determining when the Federal Reserve will resume cutting rates. The businesses best positioned for the eventual rate cut cycle will be those that have maintained financial flexibility through the current period of elevated costs.