Uncertainties Over U.S.-Iran Deal Could Prevent Much Weaker Dollar
The U.S. dollar is maintaining its value as a safe-haven asset despite an interim peace deal between the United States and Iran, according to analysts at Rabobank and UniCredit. While the agreement initially signaled a potential reopening of the Strait of Hormuz, complications regarding mines and shipping logistics have tempered market optimism. The DXY dollar index recently recorded a 0.2% decline to 99.525, as investors weigh the geopolitical situation against shifting expectations for Federal Reserve interest rate policy.
Did You Know? The market currently estimates a 68% probability of a 25 basis point interest rate increase by the Federal Reserve this December, with a move fully priced in by March, according to LSEG data.
Market Response to the U.S.-Iran Interim Agreement
The interim peace deal has not triggered a significant sell-off in the dollar, largely due to lingering uncertainty regarding the stability of oil supply routes. Rabobank’s Jane Foley notes that while President Trump indicated the Strait of Hormuz would reopen Friday, physical obstacles like mines and logistical delays mean that energy markets are unlikely to see a quick return to normal. This uncertainty serves as a floor for the dollar, preventing a more substantial decline despite the easing of tensions.
Federal Reserve Policy and the Warsh Era
The direction of the U.S. dollar now hinges on the strategy of the Federal Reserve under new Chair Kevin Warsh. Strategists at UniCredit’s Investment Institute suggest that the Fed is likely to keep interest rates on hold during Warsh’s first meeting on Wednesday. While the Fed may drop its bias toward policy easing, the institution faces a delicate balance: raising rates to counter rising price pressures could create friction with the Trump administration, which has expressed a preference for rate cuts. Strategists warn that any perception of complacency regarding inflation could damage the Fed’s credibility and negatively impact the dollar.
Expert Insight: The current market environment reflects a tug-of-war between geopolitical cooling and domestic monetary policy. The persistence of the dollar as a safe-haven currency, even amidst an interim peace deal, highlights that investors are prioritizing the uncertainty of oil supply logistics and the potential for future interest rate hikes over the immediate headlines of the Iran agreement.
Pressure on the Japanese Yen
The Japanese yen remains under pressure despite the potential for lower energy prices following the U.S.-Iran deal. MUFG Bank’s Lee Hardman reports that short-seller bets against the yen continue to rise ahead of the Bank of Japan’s policy decision on Tuesday. Because a 25 basis point rate hike is already fully priced in by the market, analysts expect this move alone will be insufficient to reverse the yen’s weakness. Future interventions by Japanese authorities may prove more effective only if energy prices continue to fall and expectations for U.S. rate hikes are further reduced.
Frequently Asked Questions
Why hasn’t the dollar fallen more significantly following the U.S.-Iran deal?
According to Rabobank’s Jane Foley, uncertainties regarding the actual reopening of the Strait of Hormuz, including mine threats and shipping delays, have prevented a sharp decline in the dollar’s value.

What is the market’s expectation for Federal Reserve interest rates?
LSEG data shows that the market expects a 68% chance of a 25 basis point rate hike in December, with a move fully priced in by March, though analysts anticipate rates will stay on hold at the upcoming Wednesday meeting.
How is the Japanese yen performing?
MUFG Bank’s Lee Hardman notes that the yen is struggling to recover, as investors continue to build short positions ahead of the Bank of Japan’s upcoming policy decision.
Given the current geopolitical and economic uncertainty, which factor—energy supply stability or central bank policy—do you believe will have a greater impact on currency markets in the coming month?