Foreign relations of the Netherlands context of the Western European Union and the European Security and Defence Policy of the EU – and bilaterally, as in the German-Netherlands Corps. In recent years, the Dutch have become significant contributors to UN peacekeeping efforts around the world as well as to the Stabililzation Force in Bosnia and Herzegovina (SFOR) in Bosnia. The Dutch have been strong advocates of European integration, and most aspects of their foreign, economic, and trade policies are coordinated through the European Union (EU). The Dutch postwar customs union with Belgium and Luxembourg (the Benelux group) paved the way for the formation of the
Grand Ducal Gendarmerie (Luxembourg) Belgium on the model of the French Gendarmerie, was extended to Luxembourg. After the Belgian Revolution in October 1830, Luxembourg was divided into two parts: the larger part formed the Belgian Province de Luxembourg; the other became the present-day Grand Duchy of Luxembourg, still ruled by the Netherlands. Until 1839, it was controlled by the Dutch Constabulary. Luxembourg was made an independent state (still ruled by the Dutch King in personal union) by the Treaty of London of 19 April, and the creation of a local police force was necessary. The Ordinance of 29 January 1840 created the "Grand Duchy