If its future is now in doubt, it is because sovereignty stands in the way once again. In a true economic union, underpinned by union-wide political institutions, the financial problems of Greece, Spain, and the others would not have blown up to their current proportions, threatening the existence of the union itself.
简单说，欧洲一体化工程的瓶颈就在于国家主权的限制。如今，其前景之所以可疑，是因为主权再一次挡在了前进的道路上。在一个以泛联盟政治制度为基础的真正的经济联盟中，希腊、西班牙和其他国家的财政问题不会演变到如今的威胁到联盟本身生存的程度。