Long-term interest rates in the United States climbed to their highest levels in nearly 20 years on Tuesday, as escalating conflict in the Middle East and heavy government debt issuance unsettled global markets. The 30-year Treasury yield surged to 5.32%, a peak not witnessed since 2007.
The spike in yields triggered a broad retreat in riskier assets. Major stock indices across Asia and U.S. equity futures traded lower, while the U.S. dollar gained strength against a basket of major currencies. In the commodities sector, crude oil prices continued a three-day rally, with Brent crude rising above $91 per barrel due to supply concerns. Conversely, gold and prominent cryptocurrencies like Bitcoin saw their values decline as investors adjusted to the higher-rate environment.
A primary driver for the market turbulence is the collapse of diplomatic efforts between Washington and Tehran. President Trump has formally declined to extend a 60-day ceasefire agreement, prompting Iranian officials to transition to a more aggressive military footing. This breakdown has renewed anxieties regarding the security of the Strait of Hormuz, a critical energy corridor.
Domestically, the U.S. fiscal outlook remains a major concern for bondholders. The Treasury is flooding the market with new debt to finance an expanding budget deficit. Furthermore, a surge in corporate borrowing—particularly from technology firms seeking to fund artificial intelligence infrastructure—has increased the competition for available capital.
The upward trend in yields is a worldwide phenomenon. In Japan, 10-year government bond yields reached a 30-year high, while benchmark rates in France and Germany hit levels not seen in over a decade.
The sell-off in long-term bonds persists even as some domestic economic indicators show signs of cooling. Recent data revealed an unexpected contraction in retail sales and a drop in July employment figures. However, with inflation currently at 3.4%—well above the Federal Reserve’s 2% target—investors are demanding higher premiums for holding long-dated debt.
This has resulted in a steepening yield curve, where 30-year rates are rising even as shorter-term maturities remain relatively stable. Market strategists suggest that this trend is unlikely to reverse without a significant decrease in government spending or a sharp reduction in corporate debt issuance.
