Euro-area government bond yields moved higher on Thursday as intensifying military action involving U.S. forces inside Iran and stern responses from Tehran kept crude oil markets elevated and brought back concerns about supply-side inflation for Europe's energy-importing economies.
Reports of ongoing U.S. airstrikes within Iran, paired with Tehran's warnings of an "existential war," helped keep global crude prices near one-month highs, tightening the link between geopolitical risk and inflation expectations.
For a region that imports more energy than it exports, the possibility of extended disruptions to supply represents a stagflationary threat - slowing growth prospects while lifting consumer price pressures. That dynamic was reflected in government debt markets across the euro area.
Germany's policy-sensitive 2-year yield held firm at 2.74%, a level that remains close to its February 2025 peak. The strength at the short end of the curve mirrors investor caution that energy-related inflation could prove persistent enough to keep the European Central Bank's policy stance restrictive for longer than markets had hoped.
At the long end, the benchmark 10-year German Bund yield increased to 3.137%, marking its highest reading since May 20, 2026, as investors priced in a larger term premium to reflect longer-run inflation uncertainty.
Money markets showed signs of strain as traders reworked expectations for the timing and scale of rate cuts before year-end. An overnight easing in U.S. producer prices briefly offered a measure of relief for global fixed-income markets, but the overriding influence of the Gulf conflict ultimately determined the trajectory of yields in Europe.
Debt in the euro zone periphery followed the same pattern, with Italian and Spanish 10-year yields rising in tandem with Bunds. Nevertheless, spreads versus German debt stayed broadly within recent ranges, indicating that relative risk premia did not widen dramatically despite the broader move up in yields.
Market participants signalled that capital flows will remain sensitive to daily developments in the Strait of Hormuz, where any escalation or disruption could reinforce upward pressure on energy prices and further shape policy and market expectations across the continent.