The euro weakened against the US dollar in early Asian trading on Monday, hovering around the 1.1400 level.

A fresh escalation in US-Iran tensions over the weekend served as the primary catalyst for the euro's decline. The US Central Command announced a new round of strikes against Iran, prompting retaliatory attacks by Iran's Islamic Revolutionary Guard Corps on US allies including Kuwait, Jordan, and Qatar.

The rise in geopolitical risk has boosted demand for the US dollar as a safe haven, applying downward pressure on the EUR/USD pair.

Geopolitical Tensions: Fresh US-Iran Clashes Boost Dollar

The renewed flare-up in Middle Eastern tensions over the weekend was the immediate trigger for the euro's pressure. The US Central Command announced new strikes targeting Iran's ability to threaten civilian vessels in the Strait of Hormuz.

Iran's response was swift and firm, with its Islamic Revolutionary Guard Corps launching retaliatory drone and missile attacks on several US allies in the region, including Kuwait, Jordan, and Qatar. Iran's foreign ministry condemned the US military action on Sunday, accusing Washington of violating international law and warning neighboring countries against assisting any military action targeting Iran.

This escalation impacts the EUR/USD through two channels: first, the rise in geopolitical risk directly increases safe-haven demand for the US dollar; second, sustained tensions in the Strait of Hormuz could push energy prices higher, exacerbating inflationary pressures in the Eurozone. However, at this stage, markets appear more inclined to trade the former—the dollar-boosting effect of safe-haven flows. Market reaction, with the EUR/USD pulling back near 1.1400, suggests the safe-haven narrative is temporarily outweighing the potential transmission effect of energy-driven inflation leading to more aggressive European Central Bank rate hikes. Previous market expectations for progress on a US-Iran deal, which would have eased geopolitical tensions, were dashed by the weekend's developments, indicating a diplomatic breakthrough remains distant.

Monetary Policy: ECB Hike Expectations vs. Fed Policy

On the monetary policy front, market expectations for further European Central Bank interest rate hikes have increased. Earlier signs of dim prospects for a conflict-ending deal between Washington and Tehran suggested that a conflict premium on energy prices may persist, thereby worsening Eurozone inflation.

The ECB already raised rates at its June policy meeting, and markets anticipate two more hikes over the next year to counter the impact of US-Iran tensions on energy costs.

However, the supportive effect of heightened ECB rate expectations on the euro is being offset by safe-haven buying of the US dollar. The current exchange rate hovering near 1.1400 reflects that the short-term shock from geopolitics is marginally outweighing the supportive effect of policy divergence.

Outlook: Focus Shifts to US CPI Data

Looking ahead, market focus has shifted to the upcoming release of US Consumer Price Index data for June. Market forecasts anticipate a 0.1% month-on-month decline in headline CPI and a 0.3% monthly rise in core CPI. Any signs of softening inflation could reduce the urgency for the Federal Reserve to hike rates, thereby weakening the dollar's interest rate advantage and providing an opportunity for a euro rebound.

Conversely, if the CPI data comes in stronger than expected, it could reignite expectations for Fed rate hikes, further boosting the US dollar and potentially pushing the EUR/USD below the 1.1400 level to test the 1.1350 area. In the current environment, the EUR/USD is caught in a confluence of forces: geopolitical risk, ECB-Fed policy divergence, and key economic data. In the short term, 1.1400 is a key psychological level. A decisive break below could open the door for further downside, while holding above this level suggests a higher probability of consolidation ahead of the CPI data release.

As of 8:30 AM Beijing time, the EUR/USD was quoted at 1.1401/02.