Appeal for coherence. There are moments when temptation is strong. I am talking about the temptation to invite those who systematically denigrate the EU and denounce its inefficiency, to take coherent action with regard to their complaints and leave the eurozone if they are part of it or even leave the EU if they so wish. A minority of Europeans have understood the importance and meaning of the results obtained at the end of last week's informal eurozone summit. The majority of reactions,...