Belgium–Luxembourg relations German-speaking municipality of Burg-Reuland in the province of Liège. Belgium–Luxembourg relations Belgium–Luxembourg relations are the bilateral relations between the Kingdom of Belgium and Grand Duchy of Luxembourg. Both countries have a history of close cooperation, notably within the Belgium–Luxembourg Economic Union, Benelux and within the European Union. Belgium has an embassy in Luxembourg and Luxembourg has an embassy in Brussels. The Belgian ambassador to Luxembourg is Thomas Antoine. The Luxembourg ambassador to Belgium is Jean-Jacques Welfring. Belgium and Luxembourg share a land border. On the Belgian side of the border, nearly all of it is with the province of Luxembourg;
Partitions of Luxembourg of Luxembourg would be decided later; the Netherlands, which had assented to the Conference's decision, invaded Belgium to force the Belgians to accept limitation of its territory. After the withdrawal of this force, the London Conference made its third suggestion, that Luxembourg be divided between the two, with most of the land going to Belgium, but with Luxembourg City remaining under Dutch control. Leopold agreed, and the treaty was signed on the 15 November 1831. Although the Dutch King William I rejected this suggestion at first, after the stand-off had dragged on for several years, he gave way, and agreed