King of the Netherlands and the Prince of Orange with the Royal family of Prussia and the Imperial House of Russia. In addition to these considerations of relationship the sympathies of the absolute sovereigns necessarily went out to a monarch struggling with a rebellion of his subjects, and they could not but be reluctant to participate in measures tending to legalize a revolution. The first sitting of the conference of the five Powers upon Belgian affairs took place at the Foreign Office in London, on November 4, on which occasion it was decided to impose an armistice upon the contending parties. According to the protocol, the Dutch and Belgian armies "were to retire behind the line which, previous to the treaty of May 30, 1814, separated the possessions of the sovereign prince of the United Provinces from the territories which have since been joined to them."[53] No further step of much importance was taken until December 20, when Talleyrand proposed that the conference should proclaim the independence of Belgium.[54] After a discussion of seven hours' duration, the objections of the plenipotentiaries of the absolute Powers were withdrawn, and the plan was acceded to unanimously. A month later, on January 20, 1831, the frontiers of Holland and Belgium were defined, and Belgium was declared neutral under the guarantee of the Powers. At the sitting of January 27, the plenipotentiaries apportioned the share of the general debt which each State would be called upon to bear.[55]