The Premium Is the Message

The crisis room in Tehran assumes it knows how much disruption the world will absorb before it answers. Over the past ten days it has tested that assumption against at least fifteen container ships in the Strait of Hormuz, using drones, mines and, with almost antique flourish, a rocket-propelled grenade. The crisis rooms in the Western capitals make a mirror-image assumption: that they know which voyages through the Strait are necessary, at what risk, and at what cost to whom. Neither possesses that knowledge. The danger now is not only that Tehran miscalculates. It is that the response suppresses the one instrument that has been working out the answer.

That instrument is not glamorous. It is the war-risk premium. Somewhere in London an underwriter is pricing the next transit, and her quote is the most compressed piece of intelligence about the Strait available to anyone. Into it go the owner’s appetite for risk, the cargo’s value, the crew’s willingness to sail and demand for their wages, the cost of the long way round, and every rumour from every port agent in the Gulf. No ministry assembled this knowledge, and none could. When the premium rises, it tells each shipper something specific to them: whether this cargo, this week, on this hull, is worth the passage. Some will pay. Some will wait. Some will divert, or source the goods elsewhere. Each of those decisions uses local knowledge that no convoy planner will ever see.

The case for intervention deserves its full weight, so let me state it. Freedom of navigation is a genuine public good. No single shipowner can sweep mines or deter a state, and if the premium is left to rise without limit, trade the world depends on will stop, the cost will fall on people who never chose the risk, and Tehran will have bought leverage cheaply. All of this is true. Naval protection of a sea lane is precisely the kind of thing a government should provide. The difficulty begins at the next step, which is nearly always taken: governments decide that the premium itself is the problem.

It is easy to see how this happens. A minister sees freight costs climbing and petrol prices following them. Industry lobbies explain that commerce cannot bear the cover. Soon a state reinsurance scheme appears, or a guarantee that the treasury will cover war losses beyond a modest ceiling, presented as steadying the market, and from that moment the quote in London no longer reports the danger in the Strait. It reports the generosity of the guarantor. Ships that the market would have held back now sail, because their owners carry less of the downside. More hulls in the water means more targets. More targets mean a greater obligation on the navy, which is now protecting not only the lane but the treasury’s exposure. And because the treasury has underwritten the risk, it acquires a direct interest in how many ships sail, which routes they take, and which cargoes deserve priority. The convoy officer, who knows a great deal about escort formations and nothing about whether a box of auto parts is worth more in Rotterdam this month than next, finds himself allocating the world’s trade.

There is a comic symmetry in this. Iran’s strategy rests on making passage expensive. A subsidy makes passage cheap again for the shipper while making it far more expensive for the taxpayer, so that Tehran gets the cost it wanted, simply billed to a different address. The attacker could hardly design a better arrangement: the disruption continues, the price signal that would have reduced exposure is muted, and the burden moves from people who could adjust their behaviour to people who cannot.

None of this is a case for doing nothing. It is a case for distinguishing two kinds of action. A government can clear mines, escort, deter, and state in advance, as a general rule, what it will protect and what it will not. That changes the underlying danger, and the premium will follow it down honestly. What a government cannot do without consequence is decide what the danger ought to cost and enforce that number. The first kind of action gives the market better facts. The second removes the market’s capacity to report facts at all.

The constitutional question is whether a rule can be announced before the next crisis instead of improvised during this one: that the state defends the waterway and leaves the pricing of risk to those who bear it. Without such a rule, every attack invites a new guarantee, and every guarantee invites the next.

In Fujairah tonight, a ship’s master is reading an insurance quote and deciding whether to sail. That piece of paper is the most honest document in the Gulf. The temptation in every capital is to rewrite it.