The euro fell 0.8% against the dollar on Monday to below $1.12, its weakest level since May 2025, as investors repriced risk across the eurozone. The single currency has dropped roughly eight cents from its January peak of $1.20, with 1.2% of that decline concentrated in the current month alone. The proximate cause is France, but the underlying problem is structural. French 10-year government bond yields hit their highest level since 2002 last week, driven by a toxic combination of fiscal overstretch, political fragmentation, and the Iran war's inflationary shock to sovereign debt markets globally. The spread between French and German borrowing costs — the eurozone's premier stress indicator — widened to levels last seen in 2012, when the bloc was fighting for survival. This is not a peripheral economy flashing warning signs. This is the second-largest economy in the euro area. Prime Minister Sébastien Lecornu's minority government announced a €54 billion savings plan last month, targeting pension spending and departmental budgets while shielding defence. The stated goal: reduce a 5.5% of GDP budget deficit to 5% next year. Lecornu warned that without action, the shortfall could balloon to 6.5%. The numbers are credible in their ambition and questionable in their political viability. The political arithmetic is brutal. Marine Le Pen's National Rally is gaining ground ahead of next year's presidential election. A hung parliament makes passing austerity measures a knife-fight. Strikes and protests are already pressuring Macron's centrist bloc. Investors are not pricing in whether cuts are proposed — they are pricing in whether cuts can survive contact with democratic politics under duress. Spain's snap election announcement by Pedro Sánchez, triggered after right-wing parties torpedoed housing legislation, has compounded the picture. Madrid's Ibex 35 actually rose 0.5%, but the signal is political instability spreading across the bloc's core economies. France's CAC 40 fell 1% while the FTSE 100 gained 0.2% and Germany's Dax held flat — the market is differentiating, which is exactly what happens before contagion becomes selective. UniCredit strategist Roberto Mialich flagged $1.10 as a near-term retest level for the euro. The ECB faces a trilemma: the Iran war is stoking inflation that argues for higher rates, France's debt dynamics argue for lower rates, and political fragmentation argues for whatever buys time. There is no policy setting that solves all three simultaneously. The 2012 comparison is instructive but incomplete. The ECB now has tools it lacked then — the Transmission Protection Instrument, unlimited bond-buying authority in theory. But those tools require fiscal discipline as a precondition, which is precisely what markets doubt France can deliver. If the spread keeps widening, the ECB will face its first real test of whether post-crisis architecture actually works under political stress in a core member state.
