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Yen Weakness Tests Japan’s Record Intervention as BOJ Rate-Hike Wait Raises Market Risks

Tokyo, 1 June 2026 – Japan’s yen is again testing the patience of policymakers after a record round of currency intervention failed to deliver a lasting recovery, leaving markets focused on whether the Bank of Japan will need to move more decisively on interest rates.

The yen has remained under pressure near the 160-per-dollar level, a zone that traders increasingly view as the line where Tokyo may be forced to act again. The weakness comes despite Japan spending about ¥11.7 trillion, or roughly US$73.5 billion, to support the currency between late April and late May, marking one of the most aggressive intervention campaigns in the country’s modern foreign-exchange history.

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  • Kenji Yamamoto is a Senior Fellow at The Ledger Asia, where he explores the critical nexus of Asian international relations, economic development, and environmental sustainability. With extensive experience in cross-border policy analysis, Kenji provides a unique perspective on how diplomatic alliances and green energy transitions drive long-term growth across the Asia-Pacific.

    Previously an advisor for regional development banks, he specializes in sustainable infrastructure and the circular economy’s role in modernizing emerging markets. At The Ledger Asia, Kenji’s deep-dive reports help readers navigate the complex balance between rapid industrialization and the global imperative for climate resilience and corporate responsibility.

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