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;
Belgium–Luxembourg Economic Union some relevance in being able to decide more precise measures than these organisations. International trade statistics were available for BLEU only as a combined entity until 1999, when European Community rules required split information. Compared with the Zollverein, the UEBL had several advantages for Luxembourg. Belgium was only allowed to alter its customs tariffs or conclude trade treaties after consultation with the Luxembourgish government, whereas before 1918 Luxembourg had to go along with German decisions. Similarly, only Luxembourgish customs agents would operate in Luxembourg, while under the Zollverein Prussian officials had operated in Luxembourg. The functioning of the UEBL was