U.S. 30-Year Treasury Yield Hits 2007 High

Yields on U.S. 30-year Treasury bonds surged to their highest level since 2007 on Monday as oil prices climbed above $90 per barrel, driven by stalled negotiations to end the U.S.-Iran war and investor anxiety over mounting government debt. The benchmark 30-year yield settled at 5.311 percent on August 17, while the yield on the benchmark 10-year Treasury note rose to 4.739 percent on Tuesday, extending a selloff that rippled through global bond markets.

The sharp rise reflects a confluence of pressures. Oil prices advanced alongside the yield surge, with West Texas Intermediate crude settling near $84.50 per barrel on Monday. The relationship between oil and long-term yields has tightened significantly, with a 10-day correlation reaching 0.85 as of Friday, up from near zero in late July. Analysts attribute this link to persistent inflation concerns, noting that the consumer price index rose 3.4 percent year-over-year in July, remaining well above the Federal Reserve's 2 percent target.

Geopolitical tensions have intensified these fears. A senior Iranian official told Reuters that Iran would shift to a "fully offensive military posture" after efforts to negotiate a permanent end...