From July 1994 to October 1996, in connection with the European Union’s mandate for the administration of Mostar, in Bosnia and Herzegovina, Western European Union (WEU) supplies a police contingent which is given the task of assisting the Bosnian and Croatian authorities in setting up a unified police force. This peacekeeping mission is the considered to be the first measure taken by WEU under Article J.4 of the Treaty on European Union, signed in Maastricht on 7 February 1992.