US Strikes Iran While Peace Talks Continue in Doha: Why Markets Just Reversed (May 2026)

By Ken Chigbo, founder of KenMacro, 18 years trading macro and FX (London floor and institutional desks). First published 2026-05-26, updates throughout the session. Educational only, not financial advice.

The 60-second version. Overnight 25-26 May 2026, US Central Command struck two Iranian Revolutionary Guard Corps boats reportedly laying naval mines, plus one surface-to-air missile site, near Bandar Abbas at the mouth of the Strait of Hormuz. The action was framed as self-defence inside the active ceasefire (in place since 7-8 April), not a return to war, with Iranian negotiators simultaneously in Doha. Markets had gapped risk-on on Sunday and Monday on Trump’s largely negotiated deal line: dollar lower, EUR/USD higher, oil down, gold drifting. Overnight that flipped. Brent is back above $98, the dollar is bid, EUR/USD is grinding toward its Friday close at 1.1602 and the Monday gaps are being tested. Important: the gaps have NOT been filled. Price has tested the gap-fill levels but pulled back, the gaps remain OPEN and unfilled. This article walks through what happened, what each market did, and what the desk is actually doing about it.

Why this matters in plain English. If you do not eat macro for breakfast, here is the simple version. Markets thought peace was coming, so they sold the dollar and bought stocks. Overnight the US fired back at Iran. Now markets are unwinding that bet. The dollar is going back up, the euro is going back down, oil is going back up. The trade is to play the unwind without getting caught when the next headline flips it again.

What actually happened overnight (the short version)

US Central Command struck three Iranian targets near Bandar Abbas: two Islamic Revolutionary Guard Corps (IRGC) Navy boats that the US says were laying naval mines in the approaches to the Strait of Hormuz, and one surface-to-air missile launch site. CENTCOM’s on-the-record framing was that this was defensive, not a resumption of hostilities. The ceasefire that has been in force since 7-8 April was not formally suspended by either side. Iranian state TV via Fars News reported four killed; the US has not publicly confirmed a casualty figure.

U.S. forces conducted self-defense strikes in southern Iran today to protect our troops from threats posed by Iranian forces. U.S. Central Command continues to defend our forces while using restraint during the ongoing ceasefire.

Capt. Tim Hawkins, CENTCOM spokesman, 25-26 May 2026 (NBC News, Stars and Stripes)

The timing matters as much as the strikes themselves. The Iranian foreign minister, Abbas Araghchi, the parliament speaker, Mohammad Bagher Qalibaf, and the central bank governor were in Doha for talks with US negotiators when the strikes happened. Qatar took over lead mediation from Pakistan last week. The agenda in Doha is the formal reopening of the Strait of Hormuz, the release of frozen Iranian assets, and the language around Iran’s highly-enriched uranium stockpile. Both sides have said publicly that talks continue.

The full chronology: how we got here this week

Saturday 23 May, late afternoon US

President Trump tells reporters a deal with Iran is “largely negotiated” and that the Strait of Hormuz reopening will be announced “soon.” This is the line that lit the fuse for the Sunday open.

Sunday 24 May

Axios publishes draft Memorandum of Understanding terms: a 60-day ceasefire extension, a phased reopening of the Strait of Hormuz, Iranian oil exports resume, ongoing talks on uranium enrichment, and Iran commits not to pursue nuclear weapons. President Pezeshkian publicly says Iran is “ready to assure the world that it is not pursuing nuclear weapons.” Trump tells aides “not to rush” a deal and that “time is on our side.”

Sunday night into Monday 25 May open

FX gaps risk-on. The dollar index gaps lower. EUR/USD and GBP/USD gap up. Gold initially eases on the inflation-premium unwind. Brent crude opens around 7 percent lower on Hormuz-reopen hopes. S&P 500 futures print a new all-time high at 7,534 in thin holiday tape (Memorial Day cash close).

Monday morning to mid-session

Trump posts on Truth Social: “Negotiations with the Islamic Republic of Iran are proceeding nicely!” But he also walks back the “largely negotiated” framing with the “do not rush” line. By the European afternoon, Al Jazeera leads with “Trump says US not in rush to sign deal, dashing optimism.” The intraday fade begins. Gold rotates higher on real-yield pricing (markets had cut Fed hikes), even as the dollar stays soft.

Monday late evening into Tuesday 26 May Asia

US Central Command strikes near Bandar Abbas. Fars News reports four Iranian deaths citing state TV. Asian markets reopen and the reversal kicks in: Brent up 2 percent to $98.26 (per CNBC), the dollar bid (DXY 99.03), EUR/USD off the highs at 1.1635, S&P 500 futures pulling back from 7,534 toward 7,516, VIX still around 17. The gaps from Monday are being TESTED, but the key gap-fill levels remain UNTAKEN. Price has probed the levels and pulled back, the gaps stay OPEN.

Tuesday 26 May, Doha statement

Iran’s Foreign Ministry spokesman tells reporters in Doha that “we have reached a conclusion on a large portion of the issues under discussion. But to say that this means the signing of an agreement is imminent, no one can make such a claim.” Pezeshkian orders the restoration of internet services across Iran after months of restrictions. The market reads this as a low-grade normalisation signal even as the strikes hit. The tape stays headline-jumpy.

One important nuance. This is not a new US-Iran war starting from a blue sky. It sits inside the wider 2026 Iran conflict and the ceasefire in force since 7-8 April. The strikes were officially defensive. That is why the market reversal is partial, not panic. If you read this as “war 2.0,” you will over-trade the move. The right frame is “ceasefire-with-friction.”

How the markets opened risk-on, then turned: the price-action recap

Here are the moves, asset by asset, with the Friday close as the gap-fill anchor:

Two patterns stand out. First, every classic risk-on / risk-off pair has actually moved (DXY, EUR/USD, GBP/USD, gold, Brent). Second, the cleanest mirror image is DXY versus EUR/USD: they gapped in opposite directions on Monday and are now both turning back together. That is your tape-reading signal that the move is real, not noise.

Peace-on, peace-off: the framework that explains the reversal

The same headline can move the dollar in opposite directions depending on which channel the market is pricing. Once you see this, you can never unsee it.

Why the dollar fell on peace news

A genuine deal lowers the energy-driven inflation premium. Markets price out future Federal Reserve rate hikes. The dollar loses its safe-haven bid (no more crisis flow). It also loses its rate-differential bid (no more aggressive Fed). Both legs of dollar strength flip at the same time. The DXY gap on Monday was that mechanism, expressed cleanly.

Why the dollar is rallying after the strikes

Self-defence strikes during a live ceasefire reintroduce tail-risk: Hormuz could close, oil could spike, inflation could re-accelerate, the Fed could have to stay restrictive for longer. The premium starts rebuilding. The dollar reclaims its safe-haven bid AND its rate-differential bid in one move. Mirror image of Monday.

The signal you should keep in your back pocket

Whenever the dollar moves on a geopolitics headline, ask one question: is the market pricing the inflation channel or the safe-haven channel? If both fire the same way, the move is a freight train. If they cancel each other (deal news cuts the inflation premium but the headline is also genuinely peace, which kills the safe-haven bid), the move is enormous. If they fight each other, the move is choppy. This week, both are firing the same way after the strikes. That is why the dollar reversal looks structural, not noise.

EUR/USD: the cleanest gap-fill setup on the screen

EUR/USD is doing exactly what you would expect a clean mirror of the dollar index to do. It gapped up on Monday on dollar weakness, drove to 1.1665 on the Trump peace-deal headline, then started rolling on the “do not rush” walk-back. Overnight strikes have accelerated the unwind. The pair is sitting at 1.1635 in EU session as I write.

The technical road map

First objective: the Friday close at 1.1602, which is the gap-fill level. That level has been tested but NOT taken. The Monday gap remains OPEN and unfilled. Above 1.1602, the bullish gap is intact and the dollar reversal is incomplete. Below 1.1602 (once it actually trades and closes), the next reference is 1.1585, then the late-May lows. The invalidation for the short side is back above 1.1665 (the Monday peace-on high). If we see that printed cleanly, the deal-narrative is back on and you stand aside.

Why this is the cleanest trade on the tape

Three reasons. First, the EUR/USD gap is wider and more visible than the DXY gap, so the technical setup is more obvious. Second, the cross is liquid enough (around 25 percent of daily FX volume) that you do not face spread blowouts on news. Third, the European data calendar this week is light (no ECB surprises queued), so the directional pressure is almost entirely the dollar leg. You are effectively trading the dollar via the most liquid expression available to a retail trader.

Size and stops, not direction

On headline-driven tape, the discipline that pays you is not picking direction. It is sizing for the whipsaw and using hard news-stops. Cut your usual position size in half. Place the stop somewhere a single Trump or Pezeshkian Truth Social post cannot just chew through. Take the gap-fill target in tranches: half at 1.1602, the rest at 1.1585 or wherever you can get a structure to trail behind. Do not chase a fresh high if you missed the entry, because the second entry on a headline-driven move is where most retail accounts get caught.

Dollar Index (DXY): the mirror image

The DXY tells the same story from the other side of the trade. Friday close at 99.30 was the six-week high. Monday gap-open dragged it to 98.95 on the peace-deal headline. The session low printed at 98.96, then base-built through Monday afternoon. Overnight the strike news flipped it bid; DXY is back at 99.03 in Asia and Europe.

The gap-fill target is the same 99.30 Friday close. That level has been tested but NOT taken. The Monday gap from 99.30 down to 98.95 remains OPEN. Closing the gap requires DXY to actually trade and hold at 99.30, not just probe and reject. That is roughly 27 ticks of upside from here, which for a retail trader means a meaningful EUR/USD short or a meaningful USD/CHF long. Beyond 99.30, the structure opens back up toward the year-to-date highs that were tagged earlier in May.

Invalidation: a clean break of the 98.95 Monday low confirms the dollar bears took the steering wheel back. That would mean the market read the strikes as contained and is pricing the deal anyway. Tight stops work both sides; this tape does not give you room to be sloppy.

GBP/USD: cable lags EUR on these reversals

Sterling went up the same way EUR/USD did and is selling off the same way, just on a roughly half-day delay. Friday close near 1.3450. Monday gap-up peaked at 1.3505. The pair is still bid in early Asia but rolling. The 1.3450 gap-fill is the first downside objective; that level has been tested but NOT taken, the gap remains OPEN. Below 1.3450 (once it actually trades and holds), 1.3400 is the next reference. Cable’s noise is structurally higher than EUR/USD’s (UK calendar risk, less liquid book), so trade smaller and respect the spread.

If you only have one pair to play, take EUR/USD over cable on a setup like this one. EUR/USD gives you a cleaner expression of the dollar leg with less noise.

Gold: the paradox most reporters are not explaining

Gold did something this week that looks contradictory until you see the mechanism. On Friday 22 May it dropped on peace-deal news. On Monday 25 May it rose on peace-deal news. Same catalyst, opposite reactions. Most macro reporters skipped over this. The mechanism is which transmission channel was dominant that day.

The four-channel model for gold

Gold reacts to four things: real yields, the dollar, inflation premium, and crisis flow. They sometimes pull the same way, often pull against each other, and on event days one channel ends up dominating the others.

Friday: inflation-premium channel dominated

On 22 May, peace news cut the energy-driven inflation premium, the market interpreted that as bearish for gold (less inflation hedge demand), and gold went down. Real yields barely moved. The crisis-flow channel was muted because the deal had not happened yet. Inflation premium drove the entire tape.

Monday: real-yields channel dominated

On 25 May, the same peace narrative led the market to price OUT Fed hikes more aggressively. Real yields fell (lower expected nominal rates, with inflation expectations dropping too but less so). Gold rallied on the real-yields channel even though peace news is supposedly bearish for crisis-flow gold. The channels disagreed; real yields won.

Tuesday: the strikes complicate things

Now we have a partial reversal. Real yields are creeping back up (Fed hikes are back on the table). Dollar is bid. Crisis flow is partly returning (Hormuz tail-risk is back). Inflation premium is rebuilding. The four channels are pulling in opposite directions and you are getting chop. Gold is sitting at $4,522 after a near 5 percent move, rebounding 1.30 percent on the safe-haven bid but capped by the six-week-high dollar.

Levels to watch: support at $4,450 (the gap-down low), resistance at $4,575 (a head-and-shoulders neckline most desks are watching), then $4,590 and $4,640. Until one channel takes the steering wheel cleanly, gold is the most range-traded asset on the screen. Not the cleanest trade.

Brent versus WTI: the only asymmetric trade on the tape

Oil has split. Brent crude is bid back to $98.26 on the Tue Asia tape, up around 2 percent on the strike news. WTI crude is sitting at $91.73, down around 5.1 percent. That divergence is the cleanest read of the geopolitical premium that I have seen this week.

Why Brent and WTI split

Brent is the international benchmark, priced in the North Sea but referenced for Middle Eastern and Asian crude. Strait of Hormuz risk hits Brent directly because around 20 percent of seaborne crude flows through that strait. WTI is West Texas Intermediate, US-domestic, much less Hormuz-sensitive. WTI is being dragged by EIA inventory builds and US producer headlines. So when Hormuz risk goes up, the Brent-WTI spread blows out. When Hormuz risk falls, the spread compresses.

The trade expression for a retail trader

If your broker offers both UKOIL (Brent) and USOIL (WTI), the asymmetric trade is long Brent versus short WTI as a spread. The geopolitical premium is in Brent, not WTI; you isolate the risk-premium leg and strip out the broader risk-on / risk-off noise. If your broker does not offer the spread cleanly, just trade Brent on the long side and avoid WTI. Do not assume because WTI is selling off that the geopolitical move is fading. It is not the same instrument.

Levels on Brent

First objective: the $100 psychological level. Above that, the pre-deal-hope level around $103 is the next reference. Below the current price, $96 is the Hormuz-reopen-hope low and a clean invalidation for the upside view.

S&P 500 futures, VIX, Bitcoin: the risk barometer

S&P 500 futures printed a new all-time high at 7,534 on Monday in thin tape (US Memorial Day, cash market closed). They have pulled back to 7,516 in early Tuesday and are off the highs without yet breaking the Monday range. The gap structure here is shallow because of the holiday-thin tape; treat the S&P signal as confirmation of the dollar reversal, not as a setup on its own.

VIX is sitting near 17. That is comfortable. Not the kind of move you see when a market thinks war is starting. Either equity vol is asleep at the wheel or, more likely, the market is reading the strikes as defensive and contained. Watch for a VIX move above 20 as the signal that the equity book actually started to worry.

Bitcoin held the line. After a weekend low at $74,508 (yearly retest), BTC recovered to $77,200 on Monday and is steadying around $77,000. The 100 EMA at $76,884 and the 50 EMA at $76,788 are the immediate supports; a break opens $74,487. The 50 percent Fib at $78,962 is the first upside, then $81,319 on the 200 EMA. BTC has not joined the risk-off bid that the dollar is getting; treat it as a confirmation tool for sentiment rather than a leading indicator on this trade.

What would actually break the trade (the invalidation list)

Headline-driven tape eats traders who do not write down the things that would invalidate their view. Here is the list for the bearish-EUR / bullish-dollar / long-Brent setup.

Bullish-deal triggers

A signed deal text published in full. A public date for the formal Hormuz reopening. Iranian de-escalation language from named officials (Araghchi, Pezeshkian, or Khamenei’s office). Any one of these unwinds the strike premium-rebuild thesis and you are back to selling the dollar. Trump’s Truth Social posts and informal lines do NOT count; we have learned that lesson twice this week.

Bullish-Brent break triggers

A Hormuz incident involving an actual tanker (not just IRGC boats). An IRGC retaliation strike, even a token one. Any signal that the ceasefire is formally suspended. Any of these and Brent does not stop at $103, it goes through $110.

Bullish-EUR triggers (against our view)

A surprise ECB hawk (low probability this week, calendar is light). A weak US data print that flips the rate-cut probabilities back the other way. A clean break above 1.1665 cable-leading.

Write your stops where one of those triggers, if it printed, would tag you out before you blew up the trade. Do not write them where they look nice on the chart.

The retail trader’s playbook for the rest of this week

Rule one: half size, always

On headline-driven tape, your position size is the only thing you fully control. Half your usual size buys you the right to be wrong twice and still be in the seat for the third entry. That is how you actually make money on these weeks.

Rule two: hard news-stops, no exceptions

Set the stop. Walk away from the screen for the move. The screen does not pay you for staring; it pays you for the stop you wrote BEFORE the trade. If a Trump or Pezeshkian post chews through your stop, that is the trade. Move on.

Rule three: no overnight carry through Asia open this week

Asia tape has done all the heavy lifting on these reversals this week. Close US-session positions before the London close unless the trade is genuinely structural. The Asia gap risk is asymmetric against you; do not give the tape a free option.

Rule four: trade clean signals only

EUR/USD short into 1.1650, Brent long into dips above $96, DXY long into the gap-fill. Those are the trades with structure. Skip USD/JPY (carry-dominated, contradicting the safe-haven), skip S&P futures during US-holiday-thin tape, skip silver (gold proxy that is even more whippy).

Rule five: turn off the screen for the announcement risk

If you are flat and a major announcement is queued (a Doha press conference, a Truth Social post on the deal, an EIA inventory print on the oil leg), do not trade through it. Stand aside. You only need one or two clean entries this week. Forcing trades through announcement risk is the single biggest mistake retail traders make on weeks like this.

Why this matters even if you do not know macro

If you are reading this and macro is not your usual thing, here is the takeaway in plain English. Markets move on stories. The story changed twice in 48 hours. First it was “peace is coming” (Monday). Then it was “the US fired back at Iran” (overnight). Each story-flip moves prices, and the moves are mechanical: peace = dollar down, oil down, stocks up. Strikes = dollar up, oil up, stocks down. The mechanics never change. What changes is which story the market believes today.

Your job, if you trade these markets at all, is to either trade the unwind cleanly with discipline, or stand aside and learn from the tape. There is no third option that works long-term. The traders who fight headline tape get chopped to bits. The traders who respect it pick one clean trade, size small, and let the move come to them.

Three more things worth knowing

Hezbollah-Israel is a parallel pressure vector

On Monday night, Prime Minister Netanyahu told the IDF to “press the pedal even harder” against Hezbollah in southern Lebanon. The IDF struck 70-plus Hezbollah infrastructure sites in the Bekaa Valley and elsewhere. Tehran has demanded a halt to Israeli Lebanon strikes as a precondition in the US talks. This is a second escalatory channel that could derail the Doha process even if the US-Iran direct line stays open. Watch headlines from Beirut and Tel Aviv as much as from Doha this week.

Iran’s internet restoration is a low-key signal

Pezeshkian ordering internet services back on after months of shutdown is a tactical, public, deliberate normalisation gesture. He did it the day strikes hit. Read that as “the political track is still open on our side,” even with the friction. If the internet stays on, the market has one less escalation signal to chew on. If it goes back off, that is a real signal.

Strait of Hormuz flows are not yet fully restored

Per IRGC statements coordinating passage of 26 vessels in 24 hours on 20 May, partial maritime flow has resumed but is not yet at pre-crisis volume. The roughly 22,500 mariners on 1,550-plus vessels that were trapped in the strait at the worst of the crisis (8 May data) are mostly moving again, but the throughput is constrained. A clean public restoration timeline from Doha is what the market wants to hear; until then, the premium stays partly bid.

What we are watching for the rest of the week

Three things, in order of importance. First, the Doha communique (whether the talks formally end with an MoU, a continuation statement, or a collapse). Second, any further US or Iranian military action in the Bandar Abbas-Hormuz corridor. Third, the US data calendar (any inflation print or Fed-speaker headline that reprices rate-cut probabilities).

If the Doha communique is a continuation statement (most likely outcome on current trajectory), the gap-fill thesis stays intact, EUR/USD grinds to 1.1602 (the level that is currently being tested but not yet taken), DXY to 99.30, Brent to $100. If it is an actual MoU, the dollar fades again and the Monday peace-on move resumes. If it is a collapse, Brent goes through $103 and the dollar takes off.

Frequently asked questions

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