While the EU is indeed a union, it is also a union of states with recognized rights to shape their own security and justice affairs. Unlike the continental members of the EU, Britain and Ireland have traditionally looked at borders not as sources of conflict but rather as natural mechanisms of defence, because of their position as islands. The Schengen agreement has allowed them to also collaborate within the SIS and EUROPOL, thus complementing the traditional framework of the Union, of which, ultimately, the Schengen Agreement is a part [1] . This means that Britain and Ireland are as included as they wish to be. The split in the Schengen agreement will not result in any new differences of interest between Britain and Ireland and the rest of the EU.  [1] Select Committee on European Union, ‘Schengen Information System: New Functions’, www.parliament.uk , 9 April 2003,