Belgium.
§ 99. Belgium[160] became neutralised from the moment she was recognised as an independent State in 1831. The Treaty of London, signed on November 15, 1831, by Great Britain, Austria, Belgium, France, Prussia, and Russia, stipulates in its article 7 at the same time the independence and the permanent neutrality of Belgium, and in its article 25 the guaranty of the signatory five Great Powers.[161] And the guaranty was renewed in article 1 of the Treaty of London of April 19, 1839,[162] to which the same Powers are parties, and which is the final treaty concerning the separation of Belgium from the Netherlands.
[160] See Descamps, "La Neutralité de la Belgique" (1902).
[161] See Martens, N.R. XI. pp. 394 and 404.
[162] See Martens, N.R. XVI. p. 790.
Belgium has, just like Switzerland, also succeeded in keeping up her neutrality. She, too, has built fortresses and possesses a strong army.
Luxemburg.
§ 100. The Grand Duchy of Luxemburg[163] was since 1815 in personal union with the Netherlands, but at the same time a member of the Germanic Confederation, and Prussia had since 1856 the right to keep troops in the fortress of Luxemburg. In 1866 the Germanic Confederation came to an end, and Napoleon III. made efforts to acquire Luxemburg by purchase from the King of Holland, who was at the same time Grand Duke of Luxemburg. As Prussia objected to this, it seemed advisable to the Powers to neutralise Luxemburg. A Conference met in London, at which Great Britain, Austria, Belgium, France, Holland and Luxemburg, Italy, Prussia, and Russia were represented, and on May 11, 1867, a treaty was signed for the purpose of the neutralisation, which is stipulated and collectively guaranteed by all the signatory Powers, Belgium as a neutralised State herself excepted, by article 2.[164]
[163] See Wompach, "Le Luxembourg neutre" (1900).
[164] See Martens, N.R.G. XVIII. p. 448.