Global bond yields hit multi-decade highs as governments pay the price for U.S.-Iran stalemate

• U.S. 10-year Treasury yields hit 4.74%, the highest since 2007, while 30-year yields reached their highest level since 2002 at 5.33%
• Germany's 10-year bond yield reached a 15-year high, Japan's 10-year yield topped 2.95% (a 40-year high), and yields spiked across French, Italian, UK, and Spanish government bonds
• Brent crude oil prices climbed above $90 per barrel as the nearly six-month closure of the Strait of Hormuz continued to drive up energy and commodity costs

Summary: Global Bond Yields Surge on U.S.-Iran Tensions

Key Development:

Global government bond yields surged to multi-decade highs Tuesday following the collapse of diplomatic negotiations between the U.S. and Iran, raising concerns about prolonged inflationary pressure from elevated oil prices.

Critical Facts:

• President Trump rejected extending a ceasefire with Iran on Monday; both sides abandoned peace talks
• A cargo vessel was struck in the Strait of Hormuz, a critical shipping route that has been effectively closed during the nearly six-month conflict
• Brent crude oil futures climbed above $90 per barrel

Bond Market Impact:

U.S. Treasury yields reached multi-year peaks:

• 30-year yield: 5.3275% (highest since 2002)
• 10-year yield: 4.74% (highest since 2007)
• Notes hit post-2006 highs

International bonds also spiked:

• German 10-year: 15-year high
• Japanese 10-year: 2.954%, exceeding spring's 40-year high
• Yields also jumped on French, Italian, U.K., and Spanish government bonds

Market Implications:

Analysts attribute the sell-off to multiple factors:

1. Expectations of prolonged higher oil prices due to Strait of Hormuz closure
2. Renewed inflation concerns potentially delaying interest rate cuts
3. Worries about elevated government borrowing levels
4. Investors demanding higher compensation for holding long-dated bonds

Deutsche Bank noted "few signs" of a U.S.-Iran deal, forcing investors to price in extended closure of the strategic waterway and sustained commodity price increases.

The bond rout reflects growing market anxiety that geopolitical tensions will keep inflation elevated and borrowing costs high across major economies.