Strikes on Iranian targets on February 28, 2026, and Tehran's move to restrict traffic have turned the Strait of Hormuz from an invisible trade artery into a legal and financial battleground. Trader CFOs say the closure has sparked contract disputes over missed shipments, force‑majeure claims and insurance shortfalls.
Supply chokepoint turned legal flashpoint
The Strait of Hormuz used to be an invisible piece of plumbing for global oil trade. At its narrowest it's just 39 kilometres wide. Yet a large share of seaborne oil typically moved through it each day. The February 28, 2026 strikes on Iranian targets and Tehran's subsequent move to restrict traffic have changed that calculus.
The immediate impact is simple: cargos can't move the way they used to. That gap in flows is forcing buyers, sellers, insurers and banks to reargue long-settled contract terms. Chief financial officers at major trading houses have flagged an uptick in contractual disputes linked to missed shipments, contested force-majeure claims and insurance shortfalls. The disputes are financial as much as legal — they affect working capital, margin calls and credit lines.
One analysis modelled the closure and showed why the stakes are so high. Its approach treats a shutdown of Persian Gulf exports as the equivalent of losing production — once export routes are blocked, local storage fills and producers have to curb output. It estimated that a full cessation could remove a significant share of global oil supplies. That's a shock large enough to reorder contracts across the market.
How insurance and storage feed the fights
Insurance is a central fault line. When ships transit a route deemed risky, premiums jump. Insurers may refuse to cover voyages at all, or they may impose war-risk clauses that change who pays and how much.
Traders then face three main choices:
- Reroute around Africa at much higher cost;
- Halt cargos until adequate cover can be arranged; or
- Insist on contract adjustments — which counterparties often resist.
The analysis notes that the initial restriction on sailing was partly driven by insurance and contract rules. As shipments get delayed, storage at export terminals fills and producers begin curtailing output because they have nowhere to put extra oil. When producers cut output, they still face obligations to counterparties and to state budgets, fuelling disputes over pricing, make-up supplies and non-delivery penalties.
Financing is another pressure point. Lines that underwrite trading desks are sensitive to inventory and collateral values. When Brent spiked after the crisis, margin calls and credit reviews followed, and traders relying on tight financing and lean inventories saw liquidity dry up quickly.
Regional politics adds a second chokepoint
Europe's scramble to replace lost Gulf barrels also created new tensions. Libya — already fractured by competing authorities — moved into the spotlight. Libya's crude reaches Italian refineries in about 48 hours on sea routes, and several European actors looked to the north African supplier to offset some lost Gulf volumes.
But Libya is no single counterparty. The internationally recognised government based in Tripoli signs contracts. Control on the ground, though, lies with rival forces.
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One analysis estimates a full cessation of Gulf exports would remove a significant share of global oil supplies.
This article was created with AI assistance.
