Dollar Surges on Fed Rate Hike Bets as Iran Tensions Fuel Safe-Haven Demand

The U.S. dollar continued its ascent on Sunday, May 18, 2026, as forex markets grappled with mounting expectations of Federal Reserve interest rate hikes and renewed geopolitical tensions surrounding Iran. The dollar index (DXY) extended gains for a fifth consecutive session, hovering near two-week highs, while major currency pairs like EUR/USD and GBP/USD faced mounting pressure.

According to CME Group's FedWatch tool, traders are now pricing in a 30% probability of a Federal Reserve rate hike by December 2026—up significantly from earlier forecasts that had anticipated two rate cuts this year. The dramatic shift in expectations stems from persistent cpi" title="Understanding inflation and CPI in forex">inflation concerns driven by the ongoing Middle East crisis and the near-total closure of the Strait of Hormuz.

Dollar Dominance Amid Geopolitical Uncertainty

The greenback's strength reflects a confluence of factors that have reshaped forex market dynamics over the past week. U.S. President Donald Trump stated in a Fox News interview aired Thursday night that he "would not be much more patient with Iran," urging Tehran to reach a nuclear agreement. Trump aides have indicated that the president is now more seriously considering a resumption of major combat operations than in recent weeks.

This hawkish posture has sparked fears of fresh escalation in the conflict, driving safe-haven demand for the dollar. The 2-year Treasury yield, which typically moves in tandem with interest rate expectations, stood at 3.979% as of May 13, reflecting growing conviction that the Fed will maintain—or even raise—borrowing costs.

"The optimism about a final deal between the U.S. and Iran has caused at least some short-term relief in gold, with lower oil prices, moderated inflation concerns, and shifted biases with regards to Fed actions later in the year," said Peter Grant, vice president and senior metals strategist at Zaner Metals, in comments from earlier this month. However, that optimism has evaporated in recent days as diplomatic progress stalled.

EUR/USD Under Pressure at Key Support

EUR/USD fell sharply on Friday, May 17, as U.S. yields climbed and Middle East risks weighed on sentiment. The pair tested the critical 200-day exponential moving average (EMA) around 1.1650, with analyst Christopher Lewis of DailyForex warning that a break below this level could trigger a move toward 1.14—a massive support level.

"The Euro fell on Friday as interest rates in the United States continued to climb," Lewis wrote in his May 18 analysis. "I don't see a lot of progress [in peace talks] and sooner or later you have to worry about inflation via energy. Europe is in a much more vulnerable position than the United States is due to self-imposed green regulations and a moratorium on drilling of a lot of its resources."

Europe's energy vulnerability remains a critical factor weighing on the single currency. With the Strait of Hormuz closure disrupting global oil flows, the continent faces acute supply risks that could reignite inflation pressures and force the European Central Bank (ECB) into a difficult policy balancing act.

Gold Finds Temporary Relief, But Pressure Persists

Gold (XAU/USD) staged a modest recovery on May 18, snapping a four-day losing streak after touching $4,480—its lowest level since March 30—during the Asian session. The precious metal was trading around $4,547 at the time of this writing, according to LiteFinance data.

However, the upside potential remains limited. "Rising bets for interest rate hikes by the U.S. Federal Reserve lend additional support to the USD and undermine demand for the non-yielding bullion," FXStreet analysts noted in their May 18 forex update.

The technical outlook for gold remains bearish. LiteFinance's technical analysis identified Doji candlestick patterns around $4,543.26, suggesting ongoing market uncertainty, followed by a Bearish Engulfing pattern at Monday's opening—signaling potential continuation of the downward trend. The RSI indicator has turned upward in oversold territory around 31, hinting at possible consolidation before another leg down.

Fed Rate Hike Debate Intensifies

The shift in Federal Reserve expectations represents one of the most dramatic policy pivots in recent years. Global brokerages have scaled back expectations of two U.S. interest rate cuts this year, with forecasts now split between some easing and no cuts at all in 2026 amid inflation risks and cautious policymakers.

At the latest FOMC meeting, the Federal Reserve left its monetary policy settings unchanged at 3.50–3.75%. However, four policymakers dissented—highlighting a growing policy divide amid heightened uncertainty linked to the Iranian conflict. According to CME data, the probability of a rate cut to 3.25–3.50% in June stands at just 2.6%, while 97.4% of market participants expect rates to remain unchanged.

The potential for rate hikes has profound implications for forex markets. A stronger dollar typically pressures emerging market currencies, commodity prices, and carry trade strategies. Traders are now closely watching upcoming economic data releases for confirmation of persistent inflation pressures:

• May 20: Release of the FOMC minutes
• May 21: Initial jobless claims data and May PMI data for manufacturing and services sectors
• May 22: May inflation expectations from the University of Michigan

G7 Finance Ministers Address Economic Risks

Adding to market concerns, G7 finance ministers are scheduled to meet to discuss the economic consequences of the prolonged Strait of Hormuz closure. The waterway, through which approximately 21% of global petroleum passes, has been effectively blockaded as the U.S.-Iran standoff continues.

"The prolonged Middle East crisis and the near-total closure of the Strait of Hormuz continue to raise concerns across global markets," noted analysts at the World Gold Council in their Q1 2026 demand report. "This has prompted traders to revise their expectations: they have lowered forecasts for interest rate cuts this year and are now factoring in the possibility of rate hikes as early as 2027."

What Traders Should Watch This Week

As forex markets digest the dollar's rally and recalibrate rate expectations, several key levels merit attention:

• EUR/USD: Watch the 200-day EMA (around 1.1650) and 1.15 support. A break below opens the door to 1.14.
• Gold (XAU/USD): Key support at $4,509.74 and resistance at $4,576.74. RSI in oversold territory suggests potential for consolidation.
• Dollar Index (DXY): Extended rally nearing two-week highs; watch for potential overbought conditions.

The coming week's economic data releases will be critical in determining whether the Fed rate hike narrative gains further traction or if markets begin to price in a more dovish scenario should diplomatic progress emerge on the Iran front.

For now, the dollar remains firmly in control, supported by a toxic mix of geopolitical risk, inflation fears, and shifting central bank policies. Traders should prepare for continued volatility as headlines drive sentiment in what remains one of the most uncertain macroeconomic environments in recent years.