Bessent says U.S. backed Japan's yen intervention to help stabilize Asia

• The intervention targeted what Bessent called 'substantial undervaluation' of the yen, which threatened to pressure other Asian currencies including the South Korean won and Chinese yuan
• Bessent warned that intervention alone cannot determine currency direction, stating 'You can give market signals with intervention, but it's policy that turns it'
• The U.S. participated because of the yen's critical role in regional trade flows, Japan's economic size, and its contribution to global savings markets

Summary: U.S. Backs Japan's Yen Intervention to Stabilize Asian Markets

Key Development:

U.S. Treasury Secretary Scott Bessent confirmed that the United States joined Japan in a coordinated yen-buying intervention to strengthen the Japanese currency, citing regional stability concerns. This marks a significant collaborative currency market action between the two allies.

Rationale:

Bessent stated that a stable yen is critical not only for U.S. interests but for the entire Asian region. He warned that continued yen weakness could trigger competitive devaluations across Asia, with South Korean won volatility and an undervalued Chinese yuan already raising concerns. Given Japan's economic size, trade flows, and contribution to global savings markets, yen stability is considered essential for regional financial health.

Market Context:

The intervention followed what Bessent described as "substantial undervaluation" of the yen. The Treasury Secretary emphasized that both governments had maintained close communication before the action.

Policy Implications:

Bessent cautioned that intervention alone would not determine currency direction, stating "You can give market signals with intervention, but it's policy that turns it." He indicated that Japan must follow the intervention with supportive monetary and fiscal policies, though he declined to specify whether the Bank of Japan should raise interest rates.

Regional Impact:

The move signals concern about potential cascade effects across Asian currency markets and competitive devaluations that could destabilize trade relationships. The U.S. participation reflects confidence in Japan's intended policy path and commitment to broader economic reforms supporting currency strength.

This coordinated action underscores heightened attention to Asian currency stability amid global economic uncertainties.