Her party secured 46pc of the vote in a by-election earthquake a week ago. Her candidate trounced the ruling Socialists in their own bastion of Villeneuve-sur-Lot.
"The euro ceases to exist the moment that France leaves, and that is our incredible strength. What are they going to do, send in tanks?"
Yet it is the detail in the Villeneuve vote that has shocked the political class. The Front scored highest in the most Socialist cantons, a sign that it may be breaking out of its Right-wing enclaves to become the mass movement of the white working class.
Anna Rosso-Roig, a candidate for the Communist Party in the 2012 elections, has just defected to the Le Pen camp.
The Socialists had thought the rising star of Marine Le Pen would work to their advantage, splitting the Right. Now they discern a deadly threat.
Eurozone leaders will face a stark choice: either work with France for a "sortie concertee" or coordinated EMU break-up: or await their fate.
Italy risks potential losses of billions of euros on derivatives contracts it restructured at the height of the eurozone crisis, according to a confidential report by the Rome Treasury that sheds more light on the financial tactics that enabled the debt-laden country to enter the euro in 1999.
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