Tokyo
Japan’s financial intervention to support the collapsing yen is putting fresh pressure on the U.S. Treasury market.
According to Japan’s Ministry of Finance, Tokyo’s foreign securities holdings fell by a record $87.8 billion in August, while Japan carried out a record ¥15.4 trillion ($98.6 billion) intervention to defend the yen after it fell beyond ¥164 per dollar.
To raise the funds needed to support its currency, Japan—one of Washington’s largest foreign creditors—was forced to sell U.S. assets. The result: 10-year U.S. Treasury yields climbed to 4.32%, increasing Washington’s borrowing costs.
The deeper problem is structural.
Japan cannot simultaneously defend the yen, manage domestic economic pressure, and continue acting as a major source of financing for America’s enormous debt.
For Washington, this exposes a growing vulnerability: the U.S. financial system depends heavily on foreign governments recycling their reserves into Treasury debt. When those governments begin selling to protect their own economies, the system comes under pressure.
The multipolar implication
Japan’s move is another warning sign for dollar hegemony. Even close U.S. allies will ultimately prioritize their own financial survival when economic pressure becomes severe.
As Treasury-market volatility grows, countries across BRICS and Eurasia have greater incentives to diversify reserves, expand gold holdings and develop financial mechanisms less vulnerable to U.S. sanctions.
The dollar system is not collapsing overnight—but its structural weaknesses are becoming increasingly difficult to hide.