July 25, 1914. Austria-Hungary sends memorandum to powers containing _dossier_ of evidence discovered at Sarajevo trial, and declares dispute lies wholly between her and Serbia. Serbia replies to note, having previously ordered mobilization. Austro-Hungarian Legation leaves Belgrade. Germany refuses to enter mediation between Austria-Hungary and Serbia, wishing to "localize" the conflict, and proposes mediation of powers between Russia and Austria-Hungary. Russia mobilizes fourteen army corps on Austro-Hungarian frontier. Great Britain asks Austria-Hungary to extend time limit and suspend hostilities pending four-power conference. July 26, 1914. Russia proposes direct conversations to Austria-Hungary. France and Italy accept four-power conference in London. July 27, 1914. William II returns from Norway cruise to Potsdam. Austria-Hungary informs Russia she will respect Serbian integrity and independence. Russia agrees to four-power conference if direct negotiations with Austria-Hungary fail. July 28, 1914. Austria-Hungary breaks off direct negotiations with Russia; refuses four-power mediation; declares war on Serbia, and mobilizes eight army corps. Russia begins partial mobilization. Great Britain asks Germany her plan of mediation between Russia and Austria-Hungary. July 29, 1914. Germany attempts to secure neutrality of Great Britain in case of Austro-Hungarian and Russian war. Great Britain warns Germany that if France is involved in war she will support her. July 30, 1914. Austria-Hungary, advised by Germany, agrees to resume negotiations with Russia, but not on basis of Serbian reply. Germany asks Russia's explanation of her mobilization. Russia agrees to stop mobilization if Austria-Hungary respects Serbian sovereignty. After negotiations with Austria-Hungary, Russia orders general mobilization of army and navy. France reminds Great Britain of her naval agreement. Great Britain refuses Germany's proposal that she remain neutral if French territory in Europe is respected, and proposes that Germany occupy Belgrade and force mediation by the powers. July 31, 1914. Austria-Hungary accepts Anglo-German proposal for four-power mediation on basis of temporary prosecution of military measures against Serbia. Russia agrees to take no military action pending negotiations. Germany refuses to press Austria-Hungary so long as Russia mobilizes; sends ultimatum to Russia and France, and refuses to answer about respecting neutrality of Belgium. France agrees to respect this neutrality.