Nice could splinter the EU
“1. Enhanced co-operation in any of the areas referred to in this title shall have the aim of enabling the Union to develop more rapidly into an area of greater freedom, security and justice, while respecting the powers of the European Community and the objectives of this title.”
Eight or more member nations could pursue “enhanced co-operation” in several areas of interest, above and beyond that which is the basis of the European Union and which persists among the other nations.