A line separating land territory or maritime zones of two States or subparts of States. It can also refer to a region that is found at the margin of settled and developed territory.
On 13 April 2015 the Schengen Information System (SIS) – a key tool for national authorities to cooperate to fight terrorism and serious organised crime – becomes operational in the UK. The integration of the UK, which was put into effect by the Council as from 13 February, could only be accomplished thanks to intensive preparatory work by all participating states and eu-LISA, the EU agency responsible for the operational management of the SIS.
This means that the SIS is now in operation in 29 countries including 25 EU Member States and 4 Associated Countries. The SIS is a cornerstone of law enforcement cooperation and has proven to be an effective and efficient tool for exchanging information on wanted or missing persons and objects. The UK is not part of the Schengen area and will therefore only use the SIS within the context of police and judicial cooperation and not in relation to external border policy.