Many thought that this solidarity had been achieved in October 2004, with the signing of the Nice treaty, which outlined an EU constitution. But only 18 member states then approved it, before France and the Netherlands rejected it in referenda and the seven other member states then halted the ratification process.
许多人认为这种团结随着勾画欧盟宪法的《尼斯条约》的签署，已经在2004年10月实现。但当时只有18个成员国批准了该条约，接着法国和荷兰在全民公决中否决了该条约，而其他7个成员国也因此中止了批准程序。