Why The Iran War Could Reignite Inflation | Prof G Markets
As US military strikes on Iran intensify, markets are sending mixed signals about what comes next. Investors initially treated the conflict as a brief, containable episode—something like Venezuela—but Iranian resistance has proved more resilient than expected. Now the question is whether this is a short disruption or the beginning of a protracted crisis that could choke global energy supplies, reignite inflation, and force central banks to abandon rate cuts. With oil up 13% in a week, bond yields climbing, and safe havens looking surprisingly vulnerable, the world may be underpricing the tail risks of a region in turmoil.
Puntos clave
Oil prices spiked 13% in a week, with Brent crude briefly hitting $85/barrel; a sustained $10 increase translates to roughly 25 cents more per gallon of gas in the US, disproportionately hurting lower- and middle-income households.
The US economy has absorbed three negative supply shocks in the past year—tariffs, restrictive immigration policy, and now energy price surges—raising questions about how much more resilience remains before growth stalls.
European natural gas prices surged 40% (versus 6–7% for US Henry Hub) due to attacks on Qatari facilities, exposing Europe and Asia to acute inflation risk and explaining why international markets sold off harder than US equities.
If conflict damages critical Gulf infrastructure—refineries, ports, desalination plants—the disruption would be lasting, not reversible in days, fundamentally changing the risk calculus for energy markets and inflation.
Traditional safe havens are failing: gold, bonds, and crypto all sold off together, forcing capital into cash and the dollar, a setup that historically signals deep investor anxiety and illiquid markets in a crisis.
En resumen
Markets are still pricing in a quick resolution to the Iran conflict, but if strikes continue for weeks rather than days, the stagflationary cocktail of higher oil prices, persistent inflation, and abandoned Fed rate cuts could turn 2025's fragile rally into a rout.
Market Reaction: From Complacency to Concern
Investors initially priced in a quick war; Iranian resilience changed that calculus.
On Monday, markets appeared sanguine, betting on a «short, tidy little war» resembling the Venezuela operation—regime change executed swiftly with minimal disruption. By Tuesday, that confidence had cracked. The major US indices sold off as much as 2.5% intraday before paring losses, while Brent crude spiked 9% (pulling back only after Trump announced US escort services for tankers through the Strait of Hormuz). The 10-year Treasury yield climbed on inflation fears, and international markets suffered more: South Korea's KOSPI plunged over 7%, European stocks fell 3%, and safe-haven currencies like the Swiss franc hit decade highs.
What spooked investors was not the strike itself but Iranian resilience. As Robert Armstrong of the Financial Times noted, «a slightly worse best-case scenario is what I would say is priced in now.» The concern is no longer whether the conflict happens, but how long it lasts. Mark Zandi of Moody's Analytics observed that markets remain anchored to a one- to two-week timeframe for resolution. If that stretches to a month or more, «we're talking about a different kind of scenario… and the market reaction would be much more severe.»
Energy Price Shock: Who Pays the Bill?
Oil up $10/barrel means 25 cents more per gallon—real money for struggling households.
The Stagflation Setup
When stocks and bonds fall together, portfolios have nowhere to hide.
Three Supply Shocks in Twelve Months
On the Ground in the Gulf
Riyadh feels different than New York; complacency may be a luxury of distance.
“It's very easy to say if you're sitting in New York or London… If you're sitting here and watching buildings around you, hotels that you have been in and stayed in and restaurants that you've eaten in blowing up, then you feel quite differently about it.”
The Infrastructure Wild Card
Damaged refineries and ports can't be reopened with a handshake.
The Infrastructure Wild Card
The Strait of Hormuz is a choke point, but it can be closed and reopened. Critical infrastructure—refineries, export terminals, water desalination plants—cannot. Rob Armstrong warns that «if Iran can really damage these bits of infrastructure, that is lasting damage, not something that can be turned around in a week.» So far, a Saudi refinery was hit but the damage was contained. A devastating strike would «change the game and make things look much uglier, more frightening, more uncertain.»
Nowhere to Hide
Gold, bonds, crypto all fell; cash and the dollar are the only safe havens left.
In a typical risk-off episode, investors rotate into traditional safe havens: Treasuries, gold, the Swiss franc. This time, almost everything sold off in tandem. Gold is down despite being at all-time inflation-adjusted highs. Bonds fell on inflation fears. Crypto retreated. Mark Zandi noted, «Prices are down for everything… it's all got to be going into cash.» That flight to liquidity is a classic sign of deep anxiety—investors aren't rotating, they're exiting.
Rob Armstrong pointed out that the dollar remains the ultimate refuge, but even that comes with caveats. «You wish gold wasn't so expensive going into this situation,» he said, and Treasuries are hobbled by inflation concerns. The result is a market with sky-high valuations across all asset classes, no obvious safe harbor, and a rising risk that any prolonged conflict forces a violent repricing. As Zandi put it: «It's not a great setup.»
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