Brussels, 17/10/2012 (Agence Europe) - The French president, François Hollande, believes in a Europe travelling at several different speeds, with the eurozone representing its hard core. He explained that “my vision is a Europe that moves forward at different speeds, consisting of different concentric circles. They can be called an 'avant-garde', 'precursor states' or a 'hard-core'. What they are called is of little importance, it is the idea that counts. We have a eurozone and it has a...