
Everyone is watching the oil tankers. That may be the first mistake. Every time the Strait of Hormuz appears on the television screen, the conversation immediately turns to oil prices, petrol stations, inflation and the familiar nightmare of another energy shock. Politicians panic about the price at the pump because the price at the pump is visible, immediate and politically poisonous.
But there is another cargo moving through the world's maritime arteries, and its importance is brutally simple: fertilizer. Without fertilizer, modern agriculture does not simply become more expensive. It becomes less productive. And that means the war around Hormuz is quietly moving from the energy market to the dinner table.
Two commercial vessels have now sunk near the Strait after being struck by projectiles, an escalation that demonstrates how dangerous the waterway has become for civilian shipping. The immediate images are ships burning, crews abandoning vessels and containers disappearing beneath the water. But the real consequences may arrive months later, in fields thousands of kilometres away.
That is the part the political class still seems spectacularly bad at understanding. A cargo ship does not have to carry bread to threaten food security. It can carry the ingredients that allow somebody else to grow the wheat that becomes bread. Before the current crisis, roughly a third of globally traded urea and nearly half of seaborne sulphur passed through Hormuz. Sulphur is particularly important because it is used to produce sulphuric acid and phosphate fertilizer. The disruption is therefore not merely delaying a few shipments; it is attacking links in an agricultural production system that has been engineered around global trade.
And agriculture has a nasty characteristic that politicians cannot negotiate away: seasons. A farmer cannot tell a crop to wait politely until Washington, Tehran or some other capital finishes its geopolitical argument. Planting windows exist. Fertilizer must arrive when it is needed. Miss that window and the lost yield cannot simply be recovered by making a speech six months later.
A senior UN official has already warned that failure to get fertilizer moving through Hormuz within weeks could mean missing planting seasons, with potentially serious consequences for agricultural productivity and food security in parts of Asia and Africa.
This is where the stupidity of modern security thinking becomes almost embarrassing. Governments talk endlessly about “critical infrastructure” and usually mean electricity grids, telecommunications, ports, pipelines, military bases and data centres.
Fine. Add fertilizer. Add the ships that carry it. Add the ports that unload it. Add the railways, trucks, warehouses and chemical plants that move it from ocean to field. That entire chain is infrastructure for human survival. A destroyed refinery is economically devastating. A disrupted fertilizer supply can become something worse: an agricultural shock that eventually becomes a food shock, particularly in countries already dependent on imports.
And unlike oil, you cannot simply tell people to consume less food. That is why the obsession with energy prices alone is dangerously short-sighted. A government may spend billions trying to suppress petrol prices while ignoring the agricultural consequences accumulating underneath the surface. It may celebrate another tanker reaching port while farmers quietly reduce fertilizer application because prices have become impossible.
That is not resilience. That is political accounting with a blind spot. The current crisis is already showing the connection. UN agricultural officials say fertilizer disruption, higher fuel and transport costs, El Niño and problems affecting Black Sea wheat supplies are combining to increase pressure throughout the food chain. Existing fertilizer and fuel stocks initially provided some protection, but prolonged uncertainty is already influencing planting decisions.
The brutal irony is that modern globalisation was supposed to make food systems safer by spreading supply across borders. Instead, it has created extraordinary efficiency and extraordinary vulnerability. One narrow strip of water becomes dangerous, ships hesitate, insurance explodes, cargoes stop moving, fertilizer becomes scarce, farmers cut inputs, harvests weaken and food prices rise.
The missile does not need to hit a supermarket. It only needs to hit the supply chain. This is why the world needs to stop treating maritime security as somebody else's naval problem. The Strait of Hormuz is not merely a military chokepoint or an oil problem. It is a food-security chokepoint.
If governments genuinely believe that food security is national security, then fertilizer logistics must be protected with the same seriousness applied to energy infrastructure. Otherwise, we will keep staring at the burning tanker while ignoring the farmer. And by the time the consequences reach the supermarket shelf, it will be far too late to discover that the real weapon was never the oil. It was the nitrogen.









