US Dollar Index climbs above 98.00 amid deteriorating US-Iran peace optimism
작성자 Akhtar Faruqui
수정됨: 12 May 2026
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The US Dollar Index (DXY), which measures the value of the US Dollar (USD) against six major currencies, is gaining ground for the second successive day and trading around 98.10 during Asian hours on Tuesday.
- US Dollar Index rises as persistent geopolitical instability in the Middle East drives a flight to safety.
- President Trump is increasingly frustrated by the stalemate in peace talks, signaling a potential shift in regional conflict strategy.
- Traders eye Tuesday’s US inflation report for the Iran war's economic impact on Federal Reserve policy.
The US Dollar Index (DXY), which measures the value of the US Dollar (USD) against six major currencies, is gaining ground for the second successive day and trading around 98.10 during Asian hours on Tuesday.
The Greenback strengthens on the back of intensifying geopolitical risks. Global investors are pivoting toward safe-haven assets following reports of deteriorating diplomatic relations in the Middle East. The shift in sentiment comes as market participants weigh the possibility of a return to major combat operations, a move that typically triggers a flight to quality and bolsters the Greenback against more sensitive currency valuations.
According to a CNN report released Monday, US President Donald Trump has expressed growing frustration over the current state of negotiations to end regional hostilities. Aides suggest that the administration is now more seriously considering a resumption of military action than in previous weeks. Compounding these fears, Iranian Parliament speaker Mohammad Bagher Ghalibaf warned via Reuters that Iran’s military remains fully prepared to retaliate against any future strikes, putting the region’s fragile ceasefire under immense strain.
Investors are closely watching April’s consumer inflation report due on Tuesday for insight into how the war with Iran is impacting the economy and influencing Federal Reserve policy. Additionally, President Trump’s high-stakes meeting with Chinese President Xi Jinping this week is expected to center on trade, artificial intelligence, and global energy security.
US Dollar FAQs
The US Dollar (USD) is the official currency of the United States of America, and the ‘de facto’ currency of a significant number of other countries where it is found in circulation alongside local notes. It is the most heavily traded currency in the world, accounting for over 88% of all global foreign exchange turnover, or an average of $6.6 trillion in transactions per day, according to data from 2022. Following the second world war, the USD took over from the British Pound as the world’s reserve currency. For most of its history, the US Dollar was backed by Gold, until the Bretton Woods Agreement in 1971 when the Gold Standard went away.
The most important single factor impacting on the value of the US Dollar is monetary policy, which is shaped by the Federal Reserve (Fed). The Fed has two mandates: to achieve price stability (control inflation) and foster full employment. Its primary tool to achieve these two goals is by adjusting interest rates. When prices are rising too quickly and inflation is above the Fed’s 2% target, the Fed will raise rates, which helps the USD value. When inflation falls below 2% or the Unemployment Rate is too high, the Fed may lower interest rates, which weighs on the Greenback.
In extreme situations, the Federal Reserve can also print more Dollars and enact quantitative easing (QE). QE is the process by which the Fed substantially increases the flow of credit in a stuck financial system. It is a non-standard policy measure used when credit has dried up because banks will not lend to each other (out of the fear of counterparty default). It is a last resort when simply lowering interest rates is unlikely to achieve the necessary result. It was the Fed’s weapon of choice to combat the credit crunch that occurred during the Great Financial Crisis in 2008. It involves the Fed printing more Dollars and using them to buy US government bonds predominantly from financial institutions. QE usually leads to a weaker US Dollar.
Quantitative tightening (QT) is the reverse process whereby the Federal Reserve stops buying bonds from financial institutions and does not reinvest the principal from the bonds it holds maturing in new purchases. It is usually positive for the US Dollar.
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