Long-term US interest rates climbed to their highest level since 2007, triggering a global debt wobble and prompting the Treasury to intervene in bond markets to suppress yields. After two decades of fiscal complacency, reality has returned with greater complexity: global public debt has surged from 59% to 95% of GDP, reaching $110tn. Unlike the 2000s, today’s crisis threatens not just economies but also social stability, military readiness, and geopolitical influence.

Countries vary widely in resilience. The US benefits from the dollar’s reserve status, while China and India manage high debts through controlled financial systems and growth. Norway, Singapore, and the UAE hold substantial buffers. In contrast, Britain, France, Italy, and Japan face mounting pressure as debt desperados, risking private sector spillovers and eroding investor confidence.

Three key trends are emerging. First, America’s fiscal future is inseparable from its superpower role; market interventions to cap borrowing costs may undermine the dollar’s safe-haven appeal and strain defence spending. Second, heavily indebted nations risk policy paralysis during future shocks, potentially triggering austerity or foreign dependency. Third, low-debt countries—including the Nordics, Baltics, Poland, and Germany—are gaining geopolitical clout, reshaping alliances within NATO and beyond. As fiscal capacity and power converge, the global order faces a pivotal recalibration.