Making the euro zone into the "motor of the Union", in order to put an end to intentions (or suspicions) of directoires, vanguards, hardcores and similar? This is the plan of the "Spinelli Group". Made up of European Socialist MEPs, this groups bases its suggestion on the fact that the euro zone represents the most integrated element of European integration, and could thus play a leading role in economic and social governance. The group's manifesto, which was written following a seminar...