US–Iran Escalation Around Strait of Hormuz Reignites Supply Risk, Lifts Energy Costs

Fresh US–Iran military exchanges around the Strait of Hormuz are reviving fears of renewed disruption to one of the world’s most critical energy chokepoints, lifting crude prices, freight and insurance costs, and raising input risks for fuel- and food-importing economies.

After President Donald Trump declared the interim ceasefire with Iran “over” following attacks on commercial tankers and US military sites in Bahrain and Kuwait, oil prices jumped around 7%, underscoring how sensitive markets remain to any perceived threat to Hormuz transit flows.

Introduction

The latest escalation began after several commercial vessels were attacked in or near the Strait of Hormuz, prompting US air and missile strikes on more than 80 Iranian targets, including naval assets used to threaten shipping. Iran responded with drone and missile attacks on US military facilities in Bahrain and Kuwait, both key logistics hubs for Gulf trade and energy exports.

The confrontation directly tests the June 17 memorandum of understanding, which had temporarily reduced hostilities and partially reopened the Strait under contested arrangements. With Washington revoking a key oil sales waiver and Tehran signaling it will leverage its control over Hormuz, markets now face a higher probability of intermittent shipping disruptions and price spikes rather than a smooth transition to lasting peace.

Immediate Market Impact

Brent crude has spiked in response to the latest exchanges, with multiple reports citing intraday gains of around 7% as traders priced in heightened transit risk through Hormuz, which normally carries roughly one-fifth of globally traded oil and significant LNG volumes. Freight rates and war-risk insurance premia for tankers and bulk carriers transiting the Gulf are rising as underwriters reassess exposure to missile and drone attacks on ships and nearby infrastructure.

US revocation of an oil-export waiver granted under the interim deal effectively re-tightens sanctions on Iranian crude, removing an expected source of incremental supply just as physical flows face new operational hazards. This combination of constrained Iranian exports and higher transit risk for other Gulf producers is feeding into higher landed energy costs for importers and may increase price volatility across fuel-linked agricultural supply chains.

Supply Chain Disruptions

While the Strait remains technically open, recent tanker attacks, alerts in Bahrain and Kuwait, and repeated airstrikes are causing commercial operators to reconsider routings, delay sailings or impose additional security measures. Some shipowners are already diverting or slowing vessels, which can elongate delivery times for crude, LNG, refined products and dry bulk cargoes serving food-importing states in the Middle East, North Africa and South Asia.

Critical Gulf export terminals and storage hubs in countries such as Saudi Arabia, the UAE, Qatar, Kuwait and Iraq are exposed to any deterioration in navigational safety or further strikes on maritime and coastal infrastructure. Heightened risk also affects inbound shipments of grains, oilseeds, sugar and feed ingredients into Gulf ports, potentially creating localized tightness or higher CIF prices if insurers and carriers widen war-risk surcharges.

Commodities Potentially Affected

• Crude oil and condensates – Directly exposed as around 20% of seaborne crude normally passes through Hormuz; renewed sanctions on Iranian exports further tighten regional balances.
• LNG – Qatar and other Gulf LNG exporters rely on the Strait; any rerouting or slowdown increases shipping times and costs, potentially raising delivered gas prices for power and fertilizer producers.
• Fertilizers (urea, ammonia, phosphates) – Higher gas feedstock and shipping costs, plus transit risk through the Gulf, can push up export offer prices from key regional producers serving Asia, Latin America and Africa.
• Grains and oilseeds – Gulf states are major importers; increased bunker, freight and insurance costs on Black Sea, European and American origins into the Middle East could lift regional landed prices and widen basis levels.
• Sugar and rice – Similar exposure via higher freight and insurance for imports into Gulf and Red Sea ports, with potential pass-through into domestic food inflation.

Regional Trade Implications

Key Gulf crude exporters may maintain output but could see effective export capacity constrained if shipowners reduce liftings or if insurers restrict coverage for Hormuz sailings. This would support rival suppliers with alternative, less risky routes, including West African, North Sea, US Gulf and Brazilian exporters able to redirect barrels toward Asia and Europe.

For food-importing states in the Middle East and North Africa, higher energy and freight costs are likely to raise import bills, especially where currencies are weak or subsidies limit the pass-through of fuel prices. Refiners and petrochemical producers in Asia and Europe could also adjust sourcing patterns, favoring non-Gulf feedstock to reduce exposure, while some buyers may seek longer-term contracts outside the Gulf to hedge against repeated disruptions.

Market Outlook

In the short term, markets are likely to price a risk premium into crude, products and freight linked to Hormuz exposure, with sharp intraday volatility around any further attacks or diplomatic signals. Traders will watch for evidence of actual export or transit losses, changes in shipping patterns, and any formal moves by Iran to further restrict traffic or by the US and allies to escort or convoy commercial vessels.

Beyond energy, sustained elevation in bunker and insurance costs could gradually filter into global food and fertilizer prices over the coming weeks, especially for cargoes routed via the Gulf. Much will depend on whether the June 17 framework can be revived or replaced, or whether the conflict settles into a pattern of recurring flare-ups that normalize a higher risk floor for Hormuz-based trade.

CMB Market Insight

The renewed US–Iran confrontation underscores that structural chokepoint risk in the Strait of Hormuz remains a defining factor for global energy and, by extension, agricultural cost structures. Even without a full shutdown of flows, higher risk premiums on Gulf shipping feed directly into fuel, freight and fertilizer costs, amplifying vulnerability for grain- and food-importing economies.

Commodity and procurement teams should stress-test exposure to Hormuz-linked freight and inputs, diversify sourcing where possible, and monitor both military activity and policy shifts on sanctions waivers and maritime security arrangements. Until a durable political framework emerges, markets should assume recurring episodes of disruption and maintain contingency plans for both price and logistics shocks.