The United States is on the brink of a significant economic milestone, with its national debt expected to surpass the US$40 trillion mark and projected to reach US$50 trillion by 2029. Interest payments alone have cost US$1.4 trillion in the past year, fuelling unease among global bond investors. Long-term government bond yields have surged worldwide, with the US 30-year Treasury yield hitting 5.31 per cent, its highest since 2007 [...]