Changes

28 European states have signed the agreement, including most EU countries and four non-EU countries ([[Iceland]], [[Liechtenstein]], [[Norway]] and [[Switzerland]]). [[Ireland]] and the [[United Kingdom]] did not sign the treaty. 26 of these countries have implemented the agreement so far. [[File:Schengen_mapSchengen map.png|500px|thumb|Schengen countries (blue), aspirants (green) and police and judicial cooperation only (red)]]