THE threat of the euro’s collapse has abated for the moment, but putting the single currency right will involve years of pain. The pressure for reform and budget cuts is fiercest in Greece, Portugal, Spain and Italy, which all saw mass strikes and clashes with police this week (see article). But ahead looms a bigger problem that could dwarf any of these: France. The country has always been at the heart of the euro, as of the European Union. President François Mitterrand argued for the single currency because he hoped to bolster French influence in an EU that would otherwise fall under the sway of a unified Germany. F ... (full story)