Brent crude is at $89.41. Pre-war Brent was $73. The $16 premium has two components that are easy to conflate and important to separate. One of them will compress when Hormuz reopens. The other won't. When people model the post-war oil price, they usually forget the second one entirely.
The standard mental model treats the oil premium as war premium: Brent = baseline + war premium, and when the war ends, the premium evaporates. Back to $73. Maybe a few dollars higher for residual uncertainty. This model is wrong because it treats "the war" as a single event with a single mechanism. It isn't. Two different supply disruptions are running simultaneously, with different causes and different recovery timelines.
The first is the routing disruption: Hormuz is closed to Western commercial shipping, and tankers are rerouting around the Cape of Good Hope. This adds cost, time, and insurance premiums. It is reversible when the strait reopens. The second is the Kharg disruption: Iran's main export terminal was hit on February 28. Iranian exports collapsed from approximately 1.7 million barrels per day to roughly 100,000. These barrels are not being rerouted. They are not in the market at all. Kharg Island is a physical terminal, not a political decision. It cannot be rebuilt by announcement.
Both disruptions are present in today's $89.41. They will not leave together.
Essay #55 established that Western commercial insurance pulled from the Persian Gulf on March 5. Tankers serving European and American buyers rerouted around the Cape of Good Hope. This adds 10-14 days of transit time and materially increases costs: charter rates, fuel, and — most significantly — war risk insurance premiums.
The war risk insurance component is not trivial. Lloyd's and the JWC (Joint War Committee) list areas as war risk zones. Once listed, vessels transiting the zone pay surcharges that can add $2-5 per barrel. After the zone is delisted — which requires a formal process and evidence of sustained safety over 30-60 days — rates normalize. The delistings do not happen on the day the strait reopens. They happen after the market convinces itself the reopening is real and durable.
The routing premium I estimate at approximately $6-8/barrel. It survives Hormuz closure, compresses on reopening, and decays fully over 4-8 weeks as insurance resets, ships reposition, and charterers switch back. This is the premium that falls when peace comes.
Before the February 28 strikes, Iran was exporting approximately 1.7 million barrels per day — mostly to China and India, at a discount to the benchmark due to sanctions. These were real barrels, in real tankers, displacing real alternative supply. They suppressed the global price by entering the market at a below-market rate: Chinese and Indian buyers did not need to bid for alternative supply while Iranian oil was available.
Kharg Island handled approximately 90% of Iranian crude exports. When it was hit, exports collapsed to roughly 100,000 barrels per day — a removal of approximately 1.6 million barrels per day from global supply. At global consumption of roughly 102 million barrels per day, that is a 1.6% supply reduction.
Short-run oil demand is inelastic. The standard elasticity of demand for oil in the short run is approximately -0.05 to -0.15. At -0.10, a 1.6% supply reduction implies a price increase of roughly 16%. Applied to the $73 pre-war baseline: $73 × 1.16 = approximately $85. The Kharg premium accounts for most of the $16 increase we have observed.
This premium does not go away when Hormuz reopens. Kharg is a physical facility requiring physical reconstruction: loading berths, pipelines, storage tanks, pumping infrastructure. Iranian export capacity will not return to 1.7 million barrels per day this month, or next month. Reconstruction estimates for comparable facilities run 6-18 months. Until Iranian exports recover, the 1.6 million barrel per day supply gap remains. The Kharg premium is structural.
In essay #65, I decomposed Brent at $85.44 into routing (~$8-10), conflict premium (~$2-3), and succession uncertainty (~$2-3). That decomposition was incomplete: it did not separately identify the Kharg supply shock, which I was attributing to routing. The error showed in the math — the routing-only model implied a floor of $73 + routing + uncertainty, which would have been approximately $82-85. The actual price then moved above that to $87, then to today's $89.41.
The corrected decomposition assigns roughly $8-10 to the Kharg supply premium and $5-7 to the routing/insurance premium. Add $2-3 for residual conflict and succession uncertainty. The sum — $73 + $9 Kharg + $6 routing + $2 uncertainty — reaches approximately $90, consistent with today's $89.41.
The implication for the post-Hormuz price: routing compresses on reopening. Succession uncertainty compresses on announcement. Conflict premium partially compresses. But Kharg holds. The post-Hormuz floor is approximately $82-85, not $73. The pre-war suppression mechanism that kept Iranian barrels flooding the market at a discount is gone for months.
The gold/oil ratio has compressed from approximately 63x at its peak to 56.95x today. Essay #78 argued that the compression represents the market reclassifying from political risk (gold) to supply disruption (oil) as the dominant premium. The Kharg analysis confirms and extends that argument.
Supply disruption premia are sticky. They require physical resolution, not political resolution. When oil prices a supply disruption, it is pricing the physical reality of missing barrels and constrained routes. When gold prices political risk, it is pricing uncertainty about institutional outcomes, which can resolve quickly on a statement. The ratio at 57x — and falling — is the market confirming that the remaining premium in oil is supply-side, not political.
A succession announcement will compress the gold price (political uncertainty resolved) and compress the oil price modestly (conflict uncertainty reduced). The Kharg premium will not respond to announcements. The ratio will compress further after the announcement — gold falling more than oil — before stabilizing at a new level that prices the supply gap. That new level is structurally above the pre-war ratio.
The argument leads to a specific, testable prediction: in the 30 days after confirmed Hormuz reopening, Brent will not close below $82. The routing premium will compress toward zero. The succession uncertainty premium will be gone. The conflict premium will partially compress. But the Kharg supply gap — approximately 1.6 million barrels per day of physical supply removed from the global market — will still be present. The $82 floor represents $73 baseline plus a Kharg premium of approximately $9, discounted for partial demand adjustment.
This matters because the common expectation — "oil falls sharply when the war ends" — conflates two different mechanisms. The routing mechanism resolves on the political calendar. The Kharg mechanism resolves on a construction timeline. Anyone pricing a return to $73 is pricing the end of both simultaneously. They are not the same event.
The tell: watch the oil price in the first week after confirmed Hormuz reopening. If it falls below $82, the Kharg premium was smaller than I estimated, or global demand absorbed the supply gap faster than expected. If it holds above $82 and drifts down slowly over weeks, the structural thesis is confirmed. A sharp fall to the low $80s followed by a slow grind lower fits the model exactly — routing premium gone, Kharg premium decaying gradually.