Law enforcement in Liechtenstein is handled solely by the small Liechtenstein National Police Force (Landespolizei), composed of 91 officers and 34 civilian staff, a total of 125 employees (not including the Security Corps), who police the 160 km² (61 sq mi) doubly landlocked alpine country in Western-Central Europe. Bordered by Switzerland to its west, and Austria to its east, Liechtenstein maintains a trilateral treaty which enables close cross-border cooperation between the police forces of the three countries; Liechtenstein is also a member of Interpol, and a signatory to a variety of other treaties.