A storm of anger and protest arose on all sides. England, basing herself on the words of the London Conference in 1871, “That it is an essential principle of the law of nations that no Power can free itself from the engagements of a Treaty, nor modify its stipulations except by consent of the contracting parties,” refused to recognise either the annexation of Bosnia and Herzegovina or the declaration of Bulgarian independence which had synchronised with it. Turkey protested loudly against a lawless act. An effective boycott of Austrian merchandise was organised by the Turkish Government. The Serbians mobilised their army. But it was the effect on Russia which was most serious. The bitter animosity excited against Austria throughout Russia became a penultimate cause of the Great War. In this national quarrel the personal differences of Aerenthal and Isvolsky played also their part. Great Britain and Russia now demanded a conference, declining meanwhile to countenance what had been done. Austria, supported by Germany, refused. The danger of some violent action on the part of Serbia became acute. Sir Edward Grey, after making it clear that Great Britain would not be drawn into a war on a Balkan quarrel, laboured to restrain Serbia, to pacify Turkey, and to give full diplomatic support to Russia. The controversy dragged on till April, 1909, when it was ended in the following remarkable manner. The Austrians had determined, unless Serbia recognised the annexation of Bosnia and Herzegovina, to send an ultimatum and to declare war upon her. At this point the German Chancellor, Prince von Bülow, intervened. Russia, he insisted, should herself advise Serbia to give way. The Powers should officially recognise the annexation without a conference being summoned and without any kind of compensation to Serbia. Russia was to give her consent to this action, without previously informing the British or French Governments. If Russia did not consent, Austria would declare war on Serbia _with the full and complete support of Germany_. Russia, thus nakedly confronted by war both with Austria and Germany, collapsed under the threat, as France had done three years before. England was left an isolated defender of the sanctity of Treaties and the law of nations. The Teutonic triumph was complete. But it was a victory gained at a perilous cost. France, after her treatment in 1905, had begun a thorough military reorganisation. Now Russia, in 1910, made an enormous increase in her already vast army; and both Russia and France, smarting under similar experiences, closed their ranks, cemented their alliance, and set to work to construct with Russian labour and French money the new strategic railway systems of which Russia’s western frontier stood in need. * * * * * It was next the turn of Great Britain to feel the pressure of the German power.