Oil is pricing in an end to the Iran war. The ships will take far longer to return.

Brent has shed its war premium on hopes that the midterm defeat forces a deal. But the political and physical halves of peace run on different clocks, and traders expect months between them.

"The reason we lost is the war," Vice President JD Vance wrote on 4 November, the morning after Republicans lost the midterms. Brent crude fell 8.7% that day to $94.62 a barrel, its lowest settlement since 31 August, and was down more than $20 from a peak near $118 on the Friday before.

Oil has since given back part of the fall. Brent settled at $98.29 on 5 November after fresh attacks on tankers near the Strait of Hormuz, and Brent has been swinging with each new report of a ship hit. The crude market has decided the war is ending. The evidence from other markets is that the ending will come in two stages, months apart.

Why the barrel moved before the diplomats did

Donald Trump has conceded the political point. He told reporters the war's role in the losses was "largely true" because it "drove the gasoline up a little bit short term". On 2 November he said a deal "could happen", and Iranian negotiators had been in Doha on 1 November for a third consecutive day of talks with Qatari mediators. Qatari mediators are now seeking US and Iranian backing for a draft that could restart direct talks within days.

Trump has not chosen, though. He is weighing renewed strikes, a deal or continued economic pressure, and has said the US might have to "destroy the rest of the country", while adding that he would rather not. Eurasia Group, a political risk consultancy, cut its odds of renewed US strikes to 60% from 65%, and its odds of an agreement to 10% from 20%. It raised the chance of a prolonged standoff to 30% from 15%.

That is a very different picture from the one in the oil price. Analysts such as Saxo Bank's Ole Hansen say the absence of a deal leaves crude exposed to "binary geopolitical risks". UBS's Paul Donovan puts oil's fair value in a postwar world at "around $80, $85 a barrel".

The politics resolves first

Traders on Polymarket put the chance that the US announces an end to its naval blockade of Iranian ports at 6.5% by 15 November, 20.5% by 30 November, 41% by 31 December and 71.5% by 31 March (all as of 6 November). The question requires a general announcement that the blockade is over or suspended, not an exemption for a single ship or port. On those numbers the central expectation, the point where a lifting becomes more likely than not, falls early in 2027.

The near dates have moved sharply. The chance of an announcement by 15 November has fallen 16.5 points in a week and the chance by 30 November has fallen 9.5 points. Traders have not given up on a deal. They have pushed it back.

Now compare the physical side. Traders put the chance that traffic through the Strait of Hormuz returns to normal by 30 November at 3.5%, and by 31 December at 9.5%, on more than $16mn of trading in the December question. "Normal" there means a seven-day average of at least 60 ship arrivals a day, as measured by the IMF's PortWatch shipping tracker. A blockade lifting by year end is a 41% proposition, a normal strait is a 9.5% one.

The gap, more than 30 points, is the article's central finding. Traders expect Washington to announce a change in policy long before insurers, shipowners and Iranian commanders let tankers move as they did before the war. UKMTO, the British maritime monitor, counted at least five vessels hit in the Gulf between 1 and 5 November, a pace close to October's record of 35. Iran's Revolutionary Guard said two tankers and a tugboat caught fire after using what it called unauthorised routes. A signature on a deal does not clear mines.

The sequence that connects Washington to the pump

The chain runs from the ballot box to the Gulf. The midterm defeat raised the cost of the war to the White House. Higher fuel prices drive that cost, and Trump has said so. A deal would be the way out, but Iran reportedly wants an end to the blockade, along with sanctions relief and frozen funds, before it reopens the strait. Axios reported that CIA Director John Ratcliffe and Treasury Secretary Scott Bessent favour keeping the blockade. Lifting it is therefore the first concession that matters, and the market is saying it will not come quickly.

A separate market on the ceasefire adds a twist. Traders put the chance that the US carries out no air or missile strikes on Iran through 15 November at 60.5%, falling to 40.5% by 30 November and 30.5% by 31 December. So the chance that the ceasefire survives to year end is lower than the chance the blockade is lifted by then (41%). Both can be true only if strikes and a deal come in the same period: a bout of fighting followed by an agreement, rather than a smooth glide to peace.

Where the Fed comes in

Oil is the link to interest rates. Traders put the chance of a Fed rate rise in December at 78.5% as of 6 November, up 14.5 points in a day, even as crude fell. Falling oil is evidently not what is driving expectations for the central bank. If barrels stay scarce into 2027, as the Hormuz prices imply, the energy pressure behind the rate debate will not fade with a headline.

Why the market could be wrong

The strongest case against this reading is that diplomacy can move faster than the odds suggest. Qatar's draft could restart talks within days, and Vance has argued openly for an agreement. A surprise announcement lifting the blockade in November would turn the 6.5% and 20.5% figures into a bargain, and oil could fall towards Donovan's $85 within days.

The opposite risk is just as live. US officials say military preparations for major combat are being finished, though they are not an order, and Eurasia Group still sees renewed strikes as the most likely single outcome. It says escalation could push Brent to between $110 and $125.

What it means for markets, business and politics

• Markets: Crude has priced a political outcome that traders themselves see as months away. That leaves Brent vulnerable to disappointment on any date that passes without a blockade announcement, and to sharp rebounds on each tanker attack. A move back through $100 needs only bad news, not a change of view.
• Rates: A physical shortage that outlasts the political settlement keeps fuel and freight costs elevated into the new year, which is what central banks must weigh when deciding whether December's expected rise is the last.
• Business: Airlines, shippers and chemicals makers should plan for high transport and insurance costs through the winter even if a deal is announced, because the strait's recovery lags the headline. Refiners face a separate squeeze, since crude exports have recovered faster than refined fuel supplies.
• Politics and policy: Republicans enter the lame-duck period with fuel prices as their main liability. The pressure on Trump to settle is real, but the first concession Iran wants, the blockade, is the one hawks in his administration reportedly oppose.

What to watch

The first date is 15 November, when the nearest blockade deadline and the ceasefire window both expire. Then 30 November, the next test for both the blockade and the strait. The Fed's December meeting follows. The PortWatch ship-arrival count will show the physical recovery before any official declares it.

The war may be ending on paper. The tankers will decide when it ends at sea.