During Tuesday's Asian trading session, the dollar-yen pair edged higher, hovering near 159.20 as investors awaited fresh catalysts to set the next directional move. Japan's fiscal health has deteriorated amid surging long-end yields, a massive debt burden, and expansive budget pressures. Combined with a still-widening US-Japan yield gap, carry trades continue to suppress the yen, largely offsetting the effects of the coordinated US-Japan intervention from late July.
Treasury Secretary Bessent announced on Monday the launch of an "economic expulsion operation" aimed at severing Iran's ties to the global economy, warning that any nation conducting business with Iran faces the risk of US sanctions. This move has quickly escalated geopolitical tensions. Iran's Supreme National Security Council Secretary Rezaei promptly countered that if the economic war persists, Tehran will halt oil exports through the Strait of Hormuz and the entire Persian Gulf, significantly raising the risk of energy supply disruptions.
This persistent geopolitical risk premium has provided clear safe-haven buying support for the dollar. At the same time, energy price volatility could stoke global inflation pressures, keeping the market's expectation of at least one Fed rate hike before year-end alive and further strengthening the dollar's relative appeal. In this environment of heightened uncertainty, the dollar's traditional status as a safe-haven currency is once again coming to the fore, weighing on other currencies.
Despite the support from geopolitical factors and a weak yen, traders remain cautious about aggressively betting on further dollar gains. Expectations for Fed rate hikes have been cooling, with pricing for additional tightening retreating. Meanwhile, concerns over US fiscal sustainability, prompted by Treasury repo failures, are capping the dollar's upside potential.
Investors are now closely watching key upcoming data and speeches. Wednesday's US PCE price index will offer the latest inflation reading, while Fed Chair Warsh's remarks at Jackson Hole on Friday could provide policy signals. These events will be crucial in determining the dollar's near-term direction. If inflation data comes in soft or Warsh sounds dovish, the dollar's upward momentum could be further constrained. Conversely, stronger data might briefly lift the dollar, but overall upside remains limited by both fiscal and policy expectations.
The yen remains under pressure from Japan's deteriorating fiscal situation and the persistent US-Japan yield gap, which have nullified the impact of the late-July joint intervention. US actions to isolate Iran economically have generated safe-haven demand for the dollar, but cooling Fed hike expectations and fiscal concerns stemming from Treasury repo failures are restricting its gains. With the market now focused on Wednesday's PCE data and Friday's Jackson Hole speech, the pair is expected to trade within the 158.00-160.00 range in the meantime.
At 10:10 Beijing time on Tuesday, the dollar-yen pair was trading at 159.28/29.