The Operation That Broke the G7 Convention
The US Treasury launched an unusual operation in late July, selling euros to buy yen, funding the first joint yen-buying operation since 1998 without prior consultation with the European Central Bank, without a G7 joint statement, and without the central banks that normally participate in coordinated intervention. The euro fell to $1.1215, a 16-month low, while the yen recovered from 164 to 156 per dollar before surrendering half those gains within two weeks. The operation's design was not multilateral burden-sharing but a transfer of adjustment costs onto the eurozone, executed with the ECB informed only after the trades cleared.
Japan Is Indispensable, Europe Is Disposable
Japan holds over $1 trillion in US Treasuries, serves as a major funding currency for global carry trades, and anchors US supply chains and Indo-Pacific security strategy. Europe holds smaller, dispersed Treasury positions, and its currency is not a global funding currency. When Japan's Ministry of Finance needed dollars to defend the yen, the US steered it toward the FIMA repo facility, which allowed Tokyo to pledge Treasuries as collateral rather than sell them, preventing a yield spike that would have raised US borrowing costs. When the euro needed defending, no equivalent mechanism was offered, especially when euro depreciation does not threaten US financial markets the way a yen collapse would.
France's Fiscal Decay and the ECB's Trap
France's debt-to-GDP ratio is projected to rise from 115.7% in 2025 to 121.7% by 2027, its bond spread over Germany widened past 110 basis points in September 2026, and its borrowing costs now exceed Italy's for the first time since the 1990s. The ECB cannot raise rates to defend the euro without deepening France's fiscal stress, and it cannot cut rates without accelerating inflation through a weaker currency. The eurozone has a monetary union without a fiscal union, which means no federal authority can credibly backstop sovereign debt when the next crisis forces the choice between price stability and financial stability. The ECB is trapped, and Washington knows it.
The Dollar Boomerang and the Limits of Support
The yen rescue was not a gift to Japan but self-defense. If Japan had sold Treasuries to fund its intervention, the 10-year yield, already climbing toward 4.7%, would have spiked higher, tightening US financial conditions and raising the cost of servicing a $40 trillion federal debt. The FIMA facility was designed to prevent that feedback loop, but it imposes strict limits: liquidity must be repaid within seven days, and Japan's $60 billion single-day draw reached the counterparty cap. The operation only capped a tail risk, but major selloffs pushed the 10-year yield to a high of 5.34%, not seen since the subprime crisis.
The New Currency Order
The intervention confirmed that dollar hegemony is no longer a system of shared benefits but a hierarchy of dependencies, with the US at the top, Japan as an indispensable junior partner, and Europe as a peripheral cost-bearer. The euro's role as a reserve currency will erode further if Europe cannot build the fiscal and political institutions to defend it, and the US has shown no willingness to stabilize the euro the way it stabilized the yen. The question is not whether Washington will choose Japan over Europe; it already did. The question is whether Europe can defend its own currency before the next crisis forces the choice again, and on current evidence, the answer is no.
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