Long-dated government bond yields are surging worldwide at once, a sign something is wrong. UK 30-year yields hit 5.88%, the highest since 1998, the US 30-year topped 5%, Japan's 10-year reached 2.95%, and German and French long yields hit 2011 and 2008 highs. The roots are dangerous government debt levels, European and UK central bank balance-sheet shrinkage, and tech giants issuing 20-40-year bonds that draw pension and insurer demand away from government debt. x.comÂ