The U.S. 30-year Treasury yield surged to 5.181% on Tuesday, marking its highest level since 2007. This increase comes amid a global bond market sell-off driven by inflation concerns. The last time yields were this high was before the 2007 financial crisis. Rising energy prices and budget deficits have led investors to demand higher returns on long-term bonds. The spike in yields could lead to higher U.S. mortgage and corporate loan rates, potentially impacting economic growth. Ajay Rajadhyaksha of Barclays highlighted the challenges of growing global debt, worsening inflation, and a lack of fiscal reform as reasons for investor caution in holding long-term bonds.