Yen Strengthens as Oil Prices Retreat Following De-escalation in US-Iran Tensions

USD/JPY traded near 163.60 during Monday’s Asian session, marking its second consecutive day of decline. The Japanese Yen is finding support from falling oil prices, triggered by recent geopolitical de-escalation following the United States’ decision to pause strikes against Iran and Tehran’s subsequent suspension of retaliatory actions. Given Japan’s heavy reliance on Middle Eastern oil imports, its economy is highly sensitive to fluctuations in crude prices and potential supply disruptions.

Domestically, Japanese Prime Minister Sanae Takaichi faces growing political pressure as her approval rating hit its lowest level since her inauguration last month, fueled by rising inflation and living costs. According to a Yomiuri newspaper report on Sunday, these economic pressures are complicating her expansionary policy agenda, which has contributed to rising bond yields and sent the Yen to forty-year lows.

The USD/JPY pair is currently facing downward pressure as the US Dollar weakens. Investor risk aversion has eased following the temporary pause in US-Iran hostilities, which ended a 13-day period of heightened conflict. However, market caution remains high due to ongoing threats in the Red Sea, where Iran-backed Houthi forces have claimed responsibility for attacks on Saudi Arabian facilities.

Reports indicate the US decision to halt military strikes was driven by concerns regarding the depletion of interceptor missile inventories and a lack of viable targets within Iran. Additionally, General Dan Caine, Chairman of the Joint Chiefs of Staff, reportedly advised President Trump on Friday that a continued military campaign could significantly strain critical munitions reserves.

Regarding monetary policy, the Federal Reserve is widely expected to maintain current interest rates during Wednesday’s meeting, with many anticipating a series of rate hikes beginning in September; however, some market participants suggest a surprise move remains possible. Similarly, the Bank of Japan (BoJ) is projected to hold its current interest rates steady during its upcoming Friday meeting.

Japanese Yen FAQs

The Japanese Yen (JPY) is a major global reserve currency. Its valuation is primarily driven by the health of the Japanese economy, Bank of Japan monetary policy decisions, the yield differential between Japanese and US bonds, and overall global risk sentiment.

As part of its mandate, the Bank of Japan (BoJ) monitors currency stability. While the BoJ occasionally intervenes in the market—typically to mitigate Yen appreciation—it does so cautiously to avoid political friction with trading partners. The Yen’s significant depreciation between 2013 and 2024 was largely a result of the BoJ’s ultra-loose monetary policy, which created a wide divergence from other major central banks. Recently, the gradual tightening of this policy has provided some support for the Yen.

For much of the last decade, the BoJ’s commitment to ultra-loose monetary policy widened the interest rate gap between Japan and other nations, particularly the US Federal Reserve. This divergence favored the US Dollar over the Yen. However, the BoJ’s 2024 pivot toward unwinding its ultra-loose stance, combined with rate adjustments by other major central banks, is beginning to narrow this yield differential.

The Japanese Yen is frequently utilized as a “safe-haven” asset. During periods of heightened market volatility and geopolitical instability, investors often move capital into the Yen due to its reputation for stability, which can lead to Yen appreciation against riskier assets.

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