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Dollar firmer as US-Iran conflict intensifies, Brent hits $90 - Finance news and analysis from Global Banking & Finance Review
Finance

Dollar firmer as US-Iran conflict intensifies, Brent hits $90

Published by Global Banking & Finance Review

Posted on July 19, 2026

4 min read

· Last updated: July 20, 2026

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Dollar gains as US-Iran war gauged; sterling eases as Burnham steps in

Market Reactions to Geopolitical and Political Developments

By Chuck Mikolajczak

Dollar Strengthens Amid Middle East Tensions

NEW YORK, July 20 (Reuters) - The dollar rose on Monday as investors weighed contradictory developments in the Iran war, while the pound fell from earlier levels as markets prepared for new British Prime Minister Andy Burnham.

Impact of Yemen's Naval Blockade

Yemen's Iran-aligned Houthis said they were imposing a naval blockade on Saudi Arabia, a move that opens a new front against the United States in its war on Iran and widens the threat to global energy supplies and trade beyond the Gulf.

Oil Prices and Diplomatic Signals

But crude prices came off their initial move higher as Iran and the United States signaled they wanted to resume diplomacy.

U.S. crude advanced 0.22% to $82.67 a barrel and Brent rose to $88.78 per barrel, up 0.77% on the day, after earlier hitting their highest levels in more than a month.

Currency Index Movements

The dollar index, which measures the greenback against a basket of currencies, climbed 0.18% to 100.92, with the euro down 0.19% at $1.1417.

Expert Commentary

"There's a lot of conflicting news coming from the Middle East — on one hand, it looks like it could be escalating, on the other hand, it looks like there's another ... last-ditch effort to try to like get a new ceasefire and that's why oil came off," said Marc Chandler, chief market strategist at Bannockburn Capital Markets in New York.

Central Bank Outlooks and Economic Data

Federal Reserve Blackout and Rate Hike Expectations

The economic calendar for the week is light, and Federal Reserve officials are in a "blackout period" of public comments ahead of the central bank's meeting next week.

Recent reports on U.S. inflation and the labor market have caused markets to sharply curb expectations for a rate hike from the Fed next week, pricing in only a 16.6% chance for an increase, according to CME FedWatch, down from more than 40% a week ago. Expectations for a hike at the September meeting are at 62.8%, however.

A bevy of Fed officials, including Chairman Kevin Warsh, have flagged concerns about inflation pressures in recent weeks while noting the labor market remains stable.

European Central Bank Policy Meeting

The European Central Bank (ECB) will hold a policy meeting later this week, with markets pricing in only a 13.1% chance of a hike, according to LSEG data, with a 78% chance for an increase at its September meeting.

The ECB is seen as being more likely to be aggressive in raising rates than the Fed due to the sensitivity to energy prices in the region and its single mandate of price stability.

Sterling and UK Political Developments

UK Chancellor Choice in Focus

UK CHANCELLOR CHOICE IN FOCUS

Sterling weakened 0.12% to $1.3437 after climbing to $1.3481 as Burnham took over from Keir Starmer, becoming Britain's seventh Prime Minister in a decade as he pledged to reshape the country's politics and deliver a new economic model.

Market Response to Cabinet Appointments

The pound pared declines after Burnham named John Healey as finance minister from a session low of $1.341.

UK assets last week were supported by reports that the job would likely go to Shabana Mahmood, widely regarded as a centrist, rather than a more left-leaning candidate.

"Markets have delivered their first verdict on Andy Burnham, which is cautious optimism. Investors appear comfortable with the idea of a more active government, but only if it can deliver faster economic growth without stretching the public finances," said Lale Akoner, global market strategist at eToro.

Other Major Currency Moves

Chinese Yuan and Japanese Yen

Elsewhere, the U.S. dollar was down 0.14% at 6.769 against the Chinese yuan in offshore trade after China kept its benchmark lending rates unchanged for a 14th consecutive month on Monday, in line with market expectations.

Against the yen, the dollar edged up 0.03% to 162.46 in thin liquidity as Japan observed the Marine Day holiday.

(Reporting by Chuck Mikolajczak, additional reporting by Sophie Kiderlin in London and Gregor Stuart Hunter in Singapore; Editing by Jamie Freed, Andrei Khalip, Andrew Heavens, Will Dunham and Susan Fenton)

Key Takeaways

  • U.S. military resumed nightly strikes into its ninth straight night following Iranian missile and drone attacks on a Jordan base that killed two U.S. service members and left one missing, intensifying Middle East tensions. (apnews.com)
  • Brent crude jumped over 3%, surpassing $90/barrel amid escalating conflict and disruptions to energy flows through the Strait of Hormuz. (axios.com)
  • The U.S. dollar gained modestly across most currencies—yen at 162.48, euro at $1.1426, pound at $1.3445—while investors shifted toward safe‑haven assets as risk sentiment weakened. (investing.com)

References

Frequently Asked Questions

Why did the US dollar strengthen against major currencies?
The US dollar gained as investors sought safe-haven assets amid escalating conflict between the US and Iran in the Middle East.
How did oil prices react to the US-Iran conflict?
Brent crude futures surged 3.3% to $90.97 a barrel as geopolitical tensions in the Middle East intensified.
What is the current outlook for Federal Reserve interest rates?
Markets anticipate no change at the next Fed meeting, with futures pricing an 85.6% probability of a rate hold.
How did cryptocurrencies perform amid market uncertainty?
Bitcoin and ether both rose by 0.2% as global financial markets responded to heightened geopolitical tensions.
What impact did Middle East tensions have on risk appetite?
Investor sentiment weakened due to increasing Middle East tensions and concerns about semiconductor valuations.

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