Foreign Central Banks Are Dumping US Treasuries in the Wake of the Iran War

The $82 billion exodus from America’s debt market signals more than wartime liquidity stress — it may mark the beginning of a structural reckoning for the dollar’s exorbitant privilege.

As oil prices pierced $110 a barrel and Iran’s blockade of the Strait of Hormuz choked the arteries of global energy trade, something quieter — and potentially more consequential — was unfolding in the marble-floored corridors of the New York Federal Reserve. Foreign central banks were liquidating American debt at the fastest pace in more than a decade.

Federal Reserve custody data shows that holdings of US Treasuries by foreign official institutions at the New York Fed have plunged by $82 billion since February 25, collapsing to $2.7 trillion — the lowest level since 2012. All-Weather Media The timing is not coincidental. The sell-off began almost precisely as the first missiles fell on Iranian soil, and it has accelerated with every week of conflict that grinds on. What began as a wartime liquidity scramble now carries the contours of a deeper structural shift — one that has economists in Frankfurt, Washington, and Beijing quietly updating their long-term models.

This is not merely a story about bond markets under pressure. It is a story about the foundations of American financial power.

The Mechanics of a Wartime Sell-Off

To understand why central banks are selling Treasuries into a crisis that would historically have driven buying, one must follow the energy channel rather than the geopolitical headline.

After Iran blocked the Strait of Hormuz, global oil prices soared, and oil-importing countries were hit hardest. Foreign exchange reserves shrank passively, combined with the need to intervene in currency markets, prompting central banks in many countries to accelerate the liquidation of US Treasuries. All-Weather Media

The logic is grimly circular. An oil-importing nation — say, India or Thailand — suddenly faces a surging import bill denominated entirely in dollars. Its currency weakens under the pressure of that trade shock. To defend the exchange rate and prevent a domestic inflationary spiral, the central bank must sell dollar assets to buy its own currency. The most liquid, deep dollar asset most central banks hold? US Treasuries. Brad Setser, senior fellow at the Council on Foreign Relations, pointed out that Turkey, India, Thailand, and other oil-importing countries are likely the main participants in this round of selling, because these countries must pay higher oil prices in dollars. All-Weather Media

Meghan Swiber, US rate strategist at Bank of America, confirmed the dynamic bluntly: “Foreign official institutions are selling US Treasuries.” All-Weather Media

The distinction that animates debate among market participants is whether this selling is passive — a mechanical consequence of reserve depletion — or active, reflecting a more deliberate choice to reduce dollar exposure. Stephen Jones, Chief Investment Officer at Aegon Asset Management, described the selling as countries “raising war funds,” saying, “They are drawing on emergency reserves.” All-Weather Media In practice, it is likely both, and the combination is what makes the current episode remarkable.

The Scale of It: A Data Table in Words

The numbers are stark and merit clear articulation.

Official data shows that since February 27 — the day before Iran was attacked — the Turkish central bank alone has sold $22 billion in foreign government bonds from its foreign reserves. All-Weather Media Turkey, battling a persistently weak lira and an energy import dependency that leaves it acutely exposed to oil shocks, has been the most aggressive seller. But it is hardly alone.

Independent data from the central banks of Thailand and India also show that both countries’ foreign exchange reserves have declined after the outbreak of the conflict. All-Weather Media Whether the drawdown came from Treasuries specifically or dollar deposits held elsewhere remains partially unclear, but the directional signal is unambiguous: oil importers across Asia and the emerging world are under intense balance-of-payments stress.

At the other end of the oil equation, Gulf exporters face a different calculus. Saudi Arabia held $149.5 billion in US Treasuries as of December 2025. The Gulf states collectively maintain over $2 trillion in dollar-denominated assets. Saudi Arabia, the UAE, Kuwait, Qatar, and Bahrain all peg their currencies to the US dollar, requiring them to keep vast amounts of dollars to support that peg and, in doing so, help sustain Treasury demand. Middle East Eye Their behavior in the weeks ahead — whether they hold, or quietly reduce — will be among the most consequential signals to watch in global bond markets.

Yields Surge: America’s Borrowing Costs Bite Back

The sell-off is not happening in a vacuum. It is coinciding with — and amplifying — a broader repricing of US government debt that has unsettled investors and policymakers alike.

The 10-year US Treasury yield has risen from around 3.9% to a peak of 4.4%, while the 2-year yield climbed from 3.35% to above 4% — both hitting eight-month highs. Euronews That may not sound catastrophic in isolation, but it arrives against a backdrop of acute fiscal vulnerability. The US national debt crossed $39 trillion on March 18, 2026 — a milestone reached just weeks into the war in Iran — with interest costs projected to become the fastest-growing line item in the federal budget, after credit downgrades from all three major ratings agencies. Fortune

RSM Chief Economist Joseph Brusuelas captured the market’s collective anxiety: “The US Treasury bond market has finally responded to the Mideast war, giving its assessment of the energy shock’s severity and the war’s effect on US fiscal imbalance and inflation.” The MOVE index, which tracks volatility in the Treasury market, has spiked to levels consistent with price instability and policy dysfunction. Fortune

BCA Research’s Chief Fixed Income Strategist Robert Timper has characterized the pattern as “aggressive bear flattening of yield curves,” reflecting a hawkish monetary policy repricing in response to inflation fears stemming from the Iran war. Euronews On a conventional reading, this is stagflationary: energy-driven inflation pushes short-term rates higher even as growth expectations deteriorate. The Fed, caught between an oil shock and a slowing labor market, finds itself precisely where it least wants to be — with no clean policy option.

Central banks are concerned that another inflation shock, even if caused by a temporary spike in oil, might convince consumers and businesses that inflation is going to be high for a long time. Marketplace The confidence channel, in other words, may matter as much as the oil price level itself.

The Petrodollar’s Perfect Storm

Here is where the analysis shifts from cyclical to structural — and where the Iran conflict becomes geopolitically transformative rather than merely disruptive.

Deutsche Bank FX strategist Mallika Sachdeva has argued that the conflict could be remembered as a key catalyst for “erosion in petrodollar dominance, and the beginnings of the petroyuan.” CNBC That is a remarkable sentence to see in a research note from a major Western bank, and it demands unpacking.

The petrodollar system — born from a secret 1974 agreement between the US and Saudi Arabia — is elegantly simple in its design. Riyadh agreed to price its oil exports in dollars and invest its petroleum windfalls into US Treasuries; in return, Washington provided military protection and security guarantees for Gulf infrastructure. Other OPEC members followed, locking the dollar in as the indispensable currency of the modern world. Fortune That recycling loop allowed Washington to borrow cheaply, run persistent deficits, and still command the world’s reserve currency — what the French famously called America’s “exorbitant privilege.”

The Iran war has directly challenged every pillar of that arrangement. US military assets and bases in the Gulf have come under attack. Oil infrastructure in the Gulf has been hit. And the US ability to provide maritime security to ensure the global flow of oil has been challenged by the closure of Hormuz. The US security umbrella has been fundamentally tested. The Canary

Deutsche Bank’s Sachdeva wrote that the conflict “may expose further fault lines, by challenging the US security umbrella for Gulf infrastructure and maritime security for global trade in oil,” adding that “damage to Gulf economies could encourage an unwind in their foreign asset savings held largely in dollars.” Middle East Eye

The most concrete manifestation of this risk is already visible. Reports from multiple outlets confirm that Iran has been negotiating tanker passage through the Strait of Hormuz only when transactions are settled in yuan — a policy Deutsche Bank flags as a potential watershed moment. Bitcoin News At least 11.7 million barrels have moved through Chinese-linked tankers since late February, with many vessels going dark to avoid tracking. Discussions with at least eight non-Middle Eastern countries on yuan-based oil trade for safe transit have also been reported. Bitcoin News

This is not yet the petroyuan. But it is its audition.

Dedollarization: Accelerant, Not Origin

It would be analytically sloppy to present the Iran war as the singular cause of dedollarization. The trend predates the current conflict by years — accelerated by US sanctions on Russia in 2022, the rise of BRICS payment alternatives, and China’s persistent push to internationalize the renminbi through mechanisms like the mBridge central bank digital currency project.

Even before the Iran war, hypotheses about the petrodollar’s erosion had been building. US sanctions on Russian and Iranian oil had already created illicit trade routes settled in yuan and roubles. Saudi Arabia had joined mBridge, taking a seat in China’s alternative payment infrastructure. Fortune

What the Iran war has done is compress the timeline. Structural shifts that might have taken a decade now have a geopolitical accelerant behind them. And critically, this wave of selling reflects a deeper trend: global reserve management institutions have been diversifying dollar asset allocations for years, and the status of US Treasuries as the primary global reserve asset is being increasingly eroded. All-Weather Media

That said, the dollar doomsayers deserve scrutiny alongside the dollar optimists. The offshore dollar credit market stood at $2.5 trillion in 2000 and has hit $14.2 trillion more recently — evidence of structural resilience that should temper apocalyptic narratives. Fortune The dollar index is on track to gain around 3% in March, with energy-driven stagflation risks supporting the greenback in the near term, according to OCBC strategists. CNBC Crises, paradoxically, often strengthen the dollar even when they degrade its long-term foundations.

The distinction — between short-term safe-haven demand for the currency and long-term diversification away from the asset — is exactly what makes this moment so analytically treacherous. Central banks may be buying dollars even as they sell Treasuries. As Wells Fargo’s Brendan McKenna noted, investors who want dollar safety have plenty of options beyond Treasuries — money market funds, savings accounts, corporate bonds — all dollar-denominated, none of which require holding sovereign debt. Marketplace

What Comes Next: The Fed’s Dilemma and the Gold Trade

The Federal Reserve finds itself boxed in on multiple fronts. Prediction markets now price only a 23.5% probability of a Fed rate hike in 2026, and only 37% probability of zero cuts — meaning the majority of investors still expect the Fed to remain relatively more dovish compared to major central banks like the ECB, which markets now give an 85% probability of hiking. Benzinga

That divergence matters for Treasury markets. If the Fed stays patient while inflation creeps higher, the risk premium on longer-dated Treasuries will widen further. If it hikes preemptively, it risks tipping a slowing economy into recession — and potentially triggering exactly the kind of demand destruction that would crash oil prices and resolve the inflationary shock anyway. Neither path is comfortable.

Meanwhile, the private investment alternatives are multiplying. Gold — the original reserve asset, abandoned by Bretton Woods but never fully forgotten — has surged as central banks globally have accelerated purchases. For emerging market central banks now questioning the sanctity of US sovereign debt, gold offers something Treasuries currently cannot: an asset without geopolitical counterparty risk.

The deeper implication, the one that keeps Treasury officials awake, is about the fiscal term premium — the extra yield investors demand to hold long-duration US debt given fiscal and policy uncertainty. Brusuelas warned that if uncertainty continues, it could trigger broader funding stress in debt markets already under pressure from concerns about private credit — with total investment-grade supply coming to market in 2026 estimated at around $14 trillion. Fortune The competition for global capital has never been fiercer, and the US no longer bids from a position of unquestioned supremacy.

The Long View: A Privilege Under Audit

The $82 billion drop in foreign official Treasury holdings is, in isolation, manageable. The US Treasury market is the deepest and most liquid in the world; $82 billion is noise in a $28 trillion market. What is not manageable — if it continues — is the structural message embedded in the data.

For fifty years, the petrodollar system functioned as a self-reinforcing cycle: oil exported in dollars, dollars recycled into Treasuries, cheap US borrowing reinforcing dollar dominance, dollar dominance reinforcing oil pricing. The Iran war has not broken that cycle. But it has introduced friction into every link of the chain simultaneously — energy shock, currency stress, reserve drawdown, yield surge, and a nascent yuan-for-oil experiment at the world’s most critical chokepoint.

Policymakers in Washington should be paying close attention not just to where Treasury yields are today, but to where foreign central bank buying will be in six, twelve, and twenty-four months. The exorbitant privilege was never guaranteed. It was maintained by confidence — in American institutions, American security commitments, and American fiscal restraint. The Iran war is testing all three at once.

For now, the dollar holds. The question is whether it holds the same thing it did before the war began.