Japan Bond Yields Hit 29-Year High on Iran Tensions

Japan's 10-year government bond yield has climbed to its highest level in 29 years, driven by a convergence of rising oil prices and renewed inflation pressure tied to the breakdown of US-Iran nuclear talks. The collapse of negotiations has pushed energy markets higher, with the US Navy's planned blockade of the Strait of Hormuz amplifying supply disruption fears across Asian economies heavily dependent on Gulf crude imports. For Japan, which imports the vast majority of its energy needs, sustained oil price increases translate directly into imported inflation, complicating the Bank of Japan's already delicate policy calculus. Bond markets are now pricing in a higher probability that the BoJ moves on interest rates this month, with yield moves reflecting investor anticipation rather than confirmed guidance. Any rate signal from the BoJ would reprice Japanese government bonds across the curve, affect yen carry trade dynamics, and ripple into global fixed income positioning. The Strait of Hormuz situation remains the primary variable to monitor.