Spain’s Podemos party – much in evidence at Syriza’s victory party in Athens, and even more mutinously radical – is leading national polls at 27pc. Marine Le Pen’s Front National won the EU elections in France with calls for a return to the franc and a return to sovereign borders. The three biggest opposition parties in Italy are now hostile to the euro. This is not contagion from Greece. It is running in parallel. Yet how it is handled will spill over with emotional force into the internal debates everywhere in Europe.