The cost of borrowing for the U.S. government has hit 5% for the first time since 2023, as global bond markets experience a sharp downturn. This development is largely driven by the surge in oil prices and heightened inflation concerns. On Monday, the yield on the benchmark 10-year U.S. Treasury bond reached the notable 5% mark. Earlier this year, it had dipped to around 4% but has been on an upward trajectory following the U.S.-Israeli conflict with Iran that began in late February. The last time yields were above 5% was in October 2023.
The rise in bond yields coincides with Brent crude oil prices climbing past $108 per barrel. This surge follows a series of attacks on Saudi Arabia’s energy infrastructure and escalating tensions throughout the Middle East. Drone strikes have forced Saudi Arabia to halt operations on a crucial east-west crude pipeline, raising alarms about potential disruptions to global oil supply. These issues have been exacerbated by assaults involving Iran-backed Houthi forces and rising tensions near the Bab al-Mandab Strait.
The situation has further deteriorated as Gulf nations have delayed talks with Tehran concerning a temporary shipping route through the Strait of Hormuz. This waterway is of strategic importance, carrying a significant portion of the world’s oil and gas. The climbing energy prices are compounding inflationary pressures and adding to the uncertainty regarding global interest rate directions. Investors are keenly awaiting the U.S. Federal Reserve’s upcoming interest rate decision, while the Bank of England is also poised to announce its decision later this week.
Significantly, the increase in U.S. Treasury yields impacts global financial markets since the 10-year Treasury serves as a benchmark for borrowing costs. Consequently, higher yields could lead to increased financing costs for governments, businesses, and households worldwide. European bond yields have similarly risen, with long-term U.K. government borrowing costs reaching their highest in decades. The combination of soaring energy prices and renewed geopolitical tensions fuels concerns that central banks may have to persist with tighter monetary policies for an extended period.
Throughout the year, oil prices have shown considerable volatility. Brent crude rose from about $72 a barrel before the conflict to a peak of roughly $126 in April. It then eased over the summer amid hopes for a lasting ceasefire but has climbed again as hostilities intensified and negotiation efforts faltered. With oil prices once more exceeding $100 a barrel, markets are grappling with renewed worries over inflation, interest rates, and the broader impact of prolonged disruptions to global energy and trade routes.