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Dollar at week-high after US resumes attacks on Iran - Finance news and analysis from Global Banking & Finance Review
Finance

Dollar at week-high after US resumes attacks on Iran

Published by Global Banking & Finance Review

Posted on July 8, 2026

2 min read

· Last updated: July 8, 2026

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US Dollar Soars to Weekly High as Fresh US Strikes on Iran Boost Safe Haven Demand

Market Reaction to Renewed US-Iran Tensions

By Gregor Stuart Hunter

Dollar Index and Safe Haven Demand

SINGAPORE, July 8 (Reuters) - The dollar clung to its highest levels of the week against most of its peers at the start of trading in Asia on Wednesday as the U.S. renewed strikes on Iran, renewing geopolitical tensions and sending oil prices higher.

The dollar index, which measures the greenback's strength against a basket of six currencies, traded at 101.18, its highest level since July 2.

Impact of US Strikes on Iran

The bids for safe haven currency came after the U.S. unleashed a new wave of strikes against Iran on Tuesday and revoked a licence allowing the country to sell oil after three tankers were attacked in the Strait of Hormuz. 

Analyst Insights and Oil Price Movements

Westpac analysts wrote in a research report that concerns for the stability of the peace deal reemerged after Iran attacked ships crossing the Strait of Hormuz. "Concerns over the inflation outlook were in focus, seeing yields jump higher across the globe," they wrote.

Brent crude was up 2.6% at $76.12 a barrel at the start of the Asian trading session on Wednesday, extending a rally into a second day.

Currency Market Movements

The kiwi dollar was 0.1% stronger at $0.5681 ahead of a decision by the Reserve Bank of New Zealand later at which it is narrowly expected to raise interest rates for the first time in more than three years. 

Against the yen, the U.S. dollar strengthened 0.1% to 162.28 yen. Bank of Japan board member Toichiro Asada, the sole dissenter to the BOJ's decision in June to raise interest rates, told Reuters on Monday he must see signs of demand-driven inflation before supporting further hikes. 

The euro slipped 0.1% to $1.1405, while the British pound nudged 0.1% lower to $1.3353. The Australian dollar was steady at $0.6926.

Cryptocurrency Market Update

Bitcoin was down 0.2% at $63,518.35, while ether was 0.5% lower at $1,774.45.

(Reporting by Gregor Stuart Hunter; Editing by Stephen Coates)

Key Takeaways

  • U.S. strikes on Iran and sanctions against its oil exports lifted the dollar to around 101.18 on the dollar index, its strongest level since July 2 (investing.com)
  • Brent crude surged over 2–3%, driven by renewed Middle East tensions and disrupted shipping, exacerbating inflation and global yield concerns (investing.com)
  • Safe‑haven flows boosted the dollar across most currencies; gains were seen against the yen, euro, pound, while the kiwi awaited a potential RBNZ rate hike, and cryptos retreated slightly (marketscreener.com)

References

Frequently Asked Questions

Why did the US dollar reach its weekly high?
The US dollar surged as renewed US strikes on Iran increased geopolitical tensions and demand for safe haven currencies.
How did the Iran strikes affect oil prices?
Oil prices rose, with Brent crude up 2.6%, as geopolitical risks increased following US actions and attacks on tankers.
What currencies were impacted by the stronger US dollar?
The euro, British pound, and Australian dollar slipped or remained steady, while the dollar strengthened against the Japanese yen.
What was the impact on cryptocurrency prices?
Bitcoin fell by 0.2% and ether by 0.5% amid the heightened geopolitical tensions and dollar strength.
What did Westpac analysts say about the market outlook?
Westpac noted increased concerns over inflation and global yields jumping higher due to renewed geopolitical tensions.

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