Iran War Ignites Global Bond Selloff as Oil Spikes; Yields Hit Multi-Year Highs, Rate-Cut Bets Fade

On May 15, global bond markets endured one of their sharpest selloffs in years, driven not by central bank tightening but by inflationThe rate at which prices rise across an economy. fears emanating from the Middle East. Oil prices spiked as the Iran war escalated and the Strait of Hormuz, through which 20% of global oil flows, faced supply disruption risk. The result was a cascade of rising yields from Tokyo to London to New York, with US 10-year Treasuries approaching 5%, a level that would crimp corporate earnings multiples and trigger a broad equity repricing.

The inflationThe rate at which prices rise across an economy. narrative has suddenly overridden the AI-driven, rate-cut-friendly script that dominated markets for the first quarter of 2026. Investors who had priced in Fed cuts by Q4 2026 are now repricing for higher-for-longer policy. Japan's producer prices surged by the most since 2014, India raised fuel prices for the first time in four years, and Pakistani and UAE energy officials scrambled to diversify imports away from the Persian Gulf. Strategists at SocGen, RBC, and T. Rowe Price all warned that inflation could remain sticky, validating the old "stagflation" risk that had been dormant since 2022.

The cross-asset damage is material. Emerging-market stocks tumbled; Indian rupee and Brazilian real came under pressure; gold surged on inflationThe rate at which prices rise across an economy. hedging. The big question is whether this is a temporary supply shock (oil normalizes once the Strait is secured) or a reset of terminal inflation expectations (oil stays at $90+ and forces a 2024 repeat of "sticky inflation"). The incoming Federal Reserve Chair Kevin Warsh takes office tomorrow amid this heightened uncertainty, and his first communication will be closely watched for hawkish or dovish signaling.

One bullish read is that the oil shock is supply-driven, not demand-driven, so demand destruction in rates-sensitive sectors (housing, autos, discretionary) could cool inflationThe rate at which prices rise across an economy. faster than the 2021-2023 episode. A bearish read is that geopolitical fragmentation (China-US détente collapsing, Middle East escalation) makes it harder to rely on synchronized global rate cuts, and that the USD strengthens further as a safe haven, pressuring emerging-market debt servicing. Equity bulls are hoping the shock fades by summer; bond bulls are bracing for higher terminal rates and durationBond price sensitivity to interest rate changes. pain.