Long-term government bond yields in the United States, Japan, Germany and France climbed on Tuesday as oil's move back above $90 a barrel revived inflation fears and investors weighed wider fiscal deficits, heavy issuance and weaker foreign demand. The U.S. 30-year Treasury yield, around 5.32%, hit its highest since 2007 after rising almost 40 basis points last month, its biggest monthly jump since December 2024. Japan's 10-year yield reached a three-decade high just under 3%, Germany's 10-year Bund (benchmark German government bond) touched its highest since 2011 and French yields hit their highest since 2009. Charu Chanana of Saxo Bank said markets are demanding a higher "term premium" for long-duration debt, while more competitive JGB yields (Japanese government bond yields), bond sales by AI hyperscalers and concern about Federal Reserve communication under new chief Kevin Warsh added to pressure. Higher sovereign yields feed through to corporate borrowing and mortgages, and Treasury Department data showing lower June holdings by Japan, the UK and China sharpened attention on who will absorb rising U.S. debt supply.