TLDR
- The greenback declined 0.3% to approximately 99.0 on Monday amid growing optimism surrounding U.S.-Iran diplomatic negotiations.
- Crude oil prices plummeted, with Brent falling nearly 6% to trade under $100 per barrel.
- European and commodity currencies strengthened against the dollar across the board.
- Reports suggest a preliminary framework has been negotiated between Washington and Tehran, though formalization remains pending.
- Market experts predict short-term dollar weakness if an agreement materializes, with potential recovery driven by solid economic fundamentals.
The greenback retreated against major global currencies on Monday as market participants anticipated potential diplomatic progress between the United States and Iran. Such an agreement could restore access to the Strait of Hormuz, a critical artery for international oil transportation.

Market liquidity remained shallow throughout the session. American financial markets remained shuttered for a federal holiday, while European trading centers were similarly offline. This reduced participation amplified price movements across asset classes.
The dollar index, which tracks the currency against a collection of major peers, declined roughly 0.3% to settle at 98.97. This marked its weakest level in ten trading sessions.
The single European currency advanced 0.4% to reach $1.1649. Sterling appreciated 0.55% to touch $1.3504. The Aussie dollar, frequently viewed as a proxy for risk sentiment, jumped 0.64%.
Japan’s currency also posted modest gains versus the dollar. Prime Minister Sanae Takaichi unveiled a $19 billion subsidy program aimed at offsetting elevated fuel expenses for consumers. She emphasized the initiative would not necessitate additional deficit spending.
Crude Plunges on Shipping Route Optimism
Oil markets experienced substantial declines. Brent crude, the global pricing benchmark, tumbled nearly 6% to $97.61 per barrel. West Texas Intermediate shed 5.3% to settle at $88.15 per barrel. Both benchmarks dropped beneath the psychologically significant $100 threshold on speculation the strategic waterway could soon resume normal operations.
The Strait of Hormuz facilitates approximately 20% of global petroleum flows. Tanker movements through the passage have been severely restricted for several weeks following the outbreak of hostilities involving Iran, fueling energy price increases and stoking worldwide inflation concerns.
Weekend media reports indicated substantial progress toward a preliminary agreement between American and Iranian negotiators. A senior administration official suggested the arrangement would encompass reopening the strait and removing the U.S. naval blockade currently enforced at Iranian harbors.
Yet contradictory messaging emerged subsequently. President Donald Trump declared via Truth Social on Sunday that naval restrictions would persist until an agreement is “reached, certified, and signed.” He further instructed negotiators against rushing toward conclusion.
Iran’s diplomatic corps injected additional uncertainty. A foreign ministry representative acknowledged that consensus had been achieved on multiple components of a prospective memorandum of understanding while cautioning that finalization was not immediately forthcoming.
One element gained clarification from Tehran: Iranian authorities confirmed they would not impose transit fees on vessels navigating the strait, reversing a previous threat. The spokesperson qualified this by noting certain maritime services within the passage would incur charges.
What Analysts Are Saying
Market strategists largely concur the dollar faces additional downside if diplomatic efforts culminate in a signed agreement. Samara Hammoud, an economist with Commonwealth Bank of Australia, indicated a peace accord would initially pressure the currency lower. She projected subsequent recovery driven by superior economic fundamentals relative to competing currencies.
Research teams at BCA Research projected near-term dollar stability while maintaining bearish projections for intermediate and extended timeframes.
Chris Weston from Pepperstone observed that market participants have demonstrated patience awaiting diplomatic resolution while maintaining expectations for eventual success. He suggested that Brent crude declining toward $90 could moderate inflation projections and diminish pressure on the Federal Reserve regarding additional rate increases.
Investors are simultaneously monitoring U.S. economic data scheduled for release this week, including Tuesday’s ADP employment figures and Thursday’s eurozone sentiment indicators.





