Analysis
For decades, the transatlantic relationship rested on a straightforward bargain: the United States supplied much of the military power underpinning European security, while Europe became one of Washington’s most important economic and political partners. But Europe’s integration eventually produced something the postwar architects could not ignore—a currency capable of competing with the U.S. dollar.
The euro is nowhere near replacing the dollar today. But it is the only established currency operating at sufficient scale to become a serious alternative if global investors, central banks and commodity exporters accelerate diversification away from U.S. assets.
The numbers show why Washington has reason to pay attention.
The dollar currently represents about 56.7% of global foreign-exchange reserves, while the euro sits around 20%. That leaves the dollar comfortably dominant, but also makes the euro its only large-scale conventional rival.
The competition is increasingly visible in the debt markets.
International euro-denominated bond and loan issuance exceeded $1.1 trillion in 2025, the highest level since the euro was created. The euro captured almost 30% of foreign-currency bond and loan issuance, while the dollar accounted for roughly 60%. Euro-denominated international bond issuance alone jumped nearly 50% during the year.
That matters because sovereign power is not measured only in armies.
It is also measured by who finances the world.
Every central bank buying European debt instead of Treasuries, every multinational issuing bonds in euros instead of dollars, and every sovereign wealth fund increasing its European allocation represents competition for capital that might otherwise flow toward dollar-denominated assets.
Europe itself increasingly recognizes this opportunity. The European Central Bank is openly discussing strengthening the euro’s international role, deepening European capital markets and creating a larger pool of safe and liquid European public debt. One ECB executive went further in June, arguing that Europe should deliberately strengthen the international role of its currency as the global monetary system becomes more contested.
That brings energy markets into the equation.
The dollar’s position does not depend solely on oil being priced in dollars—the U.S. Treasury market, American financial markets, global banking and dollar-denominated debt are considerably more important. But if Saudi Arabia and other major petroleum exporters increasingly accepted euros, accumulated euro reserves and recycled those proceeds into European bonds, the effect could reinforce itself.
More euro trade creates demand for euro reserves. More reserves create demand for euro assets. Deeper euro bond markets then make the currency more attractive for still more international transactions.
This is where monetary competition intersects with geopolitics.
Washington has repeatedly demanded greater European responsibility for its own defense. Yet a Europe capable of financing itself collectively, defending itself independently and promoting a globally competitive reserve currency would also be a Europe substantially less dependent on the United States.
That creates an inherent tension in the alliance.
America benefits from a prosperous Europe capable of sharing the security burden. But an economically unified and strategically autonomous Europe could simultaneously challenge American influence in defense, diplomacy and global finance.
There is no publicly established evidence that Washington is executing a long-term plan to destroy the European Union or collapse the euro. Current political turmoil inside Europe cannot by itself establish such a conclusion.
But a less dramatic proposition requires no conspiracy at all:
The United States has a strategic interest in preserving dollar dominance, while Europe increasingly has a strategic interest in strengthening the euro. Those interests are not always identical.
The ECB’s own numbers now make that competition measurable.
The dollar still dominates.
But for the first time in decades, the question is no longer whether another major currency exists.
It does.
The question is how far Europe intends to take it.
