In this duel the victory of Austria was soon declared. The Prussian government believed that the effective government of Germany could only be secured by a separate understanding between the two great powers; and the indiscretion of the Prussian plenipotentiary revealed to the diet a plan for what meant practically the division of Germany into Prussian and Austrian spheres of influence. This threw the lesser princes, already alarmed at the growth of Prussian military power, into the arms of Austria, which thus secured a permanent majority in the diet. To avoid any possible modification of a situation so satisfactory, Count Buol, the Austrian president of the diet, was instructed to announce that the constitution as fixed by the Final Act, and guaranteed by Europe, must be regarded as final; that it might be interpreted, but not altered. The conception of the diet as a sort of international board of control, responsible in the last resort not to Germany but to Europe, exactly suited Metternich's policy, in which the interests of Germany were subordinate to the wider ambitions of the Habsburg monarchy. It was, moreover, largely justified by the constituent elements of the diet itself. Of the German states represented in it even Prussia, by the acquisition of Posen, had become a non-German power; the Habsburg monarchy was predominantly non-German; Hanover was attached to the crown of Great Britain, Holstein to that of Denmark, Luxemburg to that of the Netherlands. The diet, then, properly controlled, was capable of being converted into an effective instrument for furthering the policy of "stability" which Metternich sought to impose upon Europe. Its one effort to make its authority effective as the guardian of the constitution, in the matter of the repudiation of the Westphalian debt and of the sale of the domains by the elector of Hesse, was crushed by the indignant intervention of Austria. Henceforth its sole effective function was to endorse and promulgate the decrees of the government of Vienna. The question of constitutions.