The Strait of Hormuz is twenty-one miles wide at its narrowest point. Approximately twenty percent of the world's oil and significant volumes of liquefied natural gas transit it every day. It is the single most consequential maritime chokepoint in the global energy supply chain, and the geopolitical conditions that determine whether it remains open, or becomes contested, are a direct input to every organisation's energy cost base, supply chain stability, and operational planning horizon.
Why Hormuz Matters to Organisations That Never Think About It
Most organisations that are not in the energy sector or international shipping do not have Hormuz on their risk register. They should. The transmission mechanism from a Hormuz disruption to a wide range of business impacts is well-understood: energy prices spike, freight costs increase, supply chain disruptions cascade, inflation accelerates, and central bank policy tightens in response. The organisations most exposed are energy-intensive manufacturers, logistics-dependent businesses, and any organisation with significant exposure to Asian markets where energy import dependency is high.
The 2019 attacks on Saudi Aramco facilities — which temporarily removed approximately five percent of global oil supply from the market — produced a short-term oil price increase that was visible in commodity and equity markets within hours. The disruption was absorbed relatively quickly because the attacks were not sustained and Iranian involvement, while widely assessed, was not escalated to conflict. A sustained closure or contested passage through Hormuz would produce effects of a different order.
The Current Risk Landscape
The risk landscape around Hormuz is shaped by three overlapping dynamics. First, the Iran-US-Israel triangle — where the prospect of escalation remains non-trivial, and where Iranian proxy activity in the region provides a range of escalation options below the threshold of direct conflict. Second, Houthi operations in the Red Sea — which while geographically distinct from Hormuz, have demonstrated the capacity of non-state actors to impose significant costs on maritime shipping in contested environments, and have prompted rerouting that has already changed the global shipping calculus. Third, the longer-term question of US strategic commitment to Gulf security, which has been a stabilising factor for decades but is subject to policy uncertainty.
None of these dynamics suggest imminent closure. All of them suggest that the probability distribution of outcomes is not centred on the status quo to the degree that it was twenty years ago. Risk managers who are treating Hormuz as a known stable constant rather than a known variable with a meaningful probability of disruption are underweighting a tail risk with significant macro-economic consequences.
What Risk Managers Should Be Doing
For most organisations, the Hormuz risk translates into a set of questions about energy supply, logistics cost, and supply chain resilience that deserve to be in the risk framework even if they do not rise to the level of a top-ten risk in normal conditions. The relevant questions are: What is the organisation's exposure to energy cost increases? What is the impact of sustained freight cost increases on the cost base and pricing model? Which supply chains have concentration in routes or transit chokepoints that would be affected by a Hormuz disruption? What would a six-month sustained disruption look like for operations and financial performance?
For organisations in sectors with direct energy exposure — resources, manufacturing, logistics, chemicals — the Hormuz scenario deserves more structured scenario analysis. The scenario does not need to be a base case. It needs to be a considered possibility that has been through a genuine planning process — one that identifies the most significant impacts, the lead indicators that would signal an escalating scenario, and the response options available.
Geopolitical risk is systematically underweighted in enterprise risk frameworks, partly because it feels too large to manage and partly because the connection between a chokepoint in the Persian Gulf and an organisation's operations in Australia, Europe, or North America is indirect and easy to treat as someone else's problem. It is not someone else's problem. It is a second-order risk that is present in virtually every organisation's exposure, and the risk practitioners who help their organisations see and prepare for it are delivering genuine value.
Tony Ridley provides geopolitical risk analysis, strategic risk advisory, and scenario planning for executive and board audiences. Contact us to discuss your requirements.