The toll on the world's oil throat

CNBC reports that Oman is engaging in what the outlet calls "strategic ambiguity" over the possibility of fees on shipping through the Strait of Hormuz — the narrow passage through which roughly a fifth of the world's traded oil moves. The legal questions are unresolved, the diplomatic signals are contradictory, and markets, the story tells us, have developed a "blind spot" as a result. That phrase alone should concentrate every serious mind in the Treasury and the State Department.

I will confess I cannot speak to the precise mechanics of modern oil futures contracts or the engineering of tanker routing — those specifics lie beyond my formation. What I can speak to is this: commerce that is not free is commerce that is taxed, and a tax levied by a private power — or an ambiguous sovereign — without the consent of the trading parties is not a tariff. It is tribute. The distinction matters enormously.

In my own time, we faced the Barbary states demanding payments for safe passage. The republic's answer, ultimately, was that tribute is incompatible with commercial dignity. A nation that pays to use a waterway it has no part in closing is a nation whose commerce is hostage. The Strait of Hormuz is not the Mediterranean, but the logic is the same: chokepoints concentrate leverage, and concentrated leverage in private or hostile hands is a tax on every gallon of oil, every kilowatt-hour, every manufactured good that depends on it.

Oman's ambiguity, as CNBC describes it, serves Oman's short-term diplomatic interests — threading between Iran's posture and the Gulf states' and the West's competing pressures. I do not fault a small nation for playing a cautious hand. But the "blind spot" this creates for markets is precisely the danger I would press upon. Public credit and commercial confidence rest on predictability. When the rules of passage through a critical strait become murky, the risk premium on every barrel transiting that water rises — and that cost does not stay in the Persian Gulf. It lands in the price of energy, in the cost of manufactures, in the household budget of every American consumer.

The recommendation is plain: the United States, through its Treasury, its trade representatives, and its diplomatic corps, must press — firmly and in concert with allies — for legal clarity on the status of international straits. This is not adventurism; it is the minimum condition of a well-ordered commerce. A nation that built its financial architecture on the premise that contracts must be honored and debts paid cannot be indifferent when the arteries of global trade are made subject to unilateral toll collection. Mark that last point as principle, not inference: ambiguity in commercial law always favors the party with the power to act unilaterally. Right now, that is not us.