Under the
Treaty of Berlin, the Ottomans controlled the
Dardanelles strait connecting the Mediterranean and the Black Sea. The Treaty prohibited the passage of any warships from any country into or out of the Black Sea. This treaty bottled up the
Black Sea Fleet, a major portion of the Russian Navy, making it useless in the
Russo-Japanese War of 1904-1905 when it was urgently needed. Izvolsky wanted this changed to allow the passage of Russian ships through the straits. Aehrenthal wanted full control of Bosnia-Herzegovina. Austria-Hungary had administered the provinces since 1878 but the Ottoman Empire remained the nominal legal owner. Aehrenthal concocted a grand diplomatic deal that proposed major benefits for both sides. Austria would gain full ownership of Bosnia with Russian approval. Turkey would get full control of the territory known as the Sanjak of Novi Pazar, and monetary compensation. Russia would get the right of passage for its warships through the Straits. Serbia would get nothing. Before approaching the Russians, Aehrenthal met with Austrian officials and won the approval of Emperor
Franz Joseph I. On September 15–16 Aehrenthal and Izvolsky held a secret meeting. No record was keptand afterwards both sides remembered it very differently. Aehrenthal assumed he had full Russian approval for his scheme, but he did not give out planned dates. Izvolsky assumed he would be informed before any actual move happened. Aehrenthal vaguely informed all the major countries but gave no details. The world was astonished on October 6, 1908, when a press release in Vienna announced that Bosnia was fully annexed. Inside Austria there was general approval except in Czech areasthat minority strongly felt its demands had been deliberately ignored. Aehrenthal had expected wide European approval and instead he faced a hostile volcanic eruption from every direction. Izvolsky vehemently denounced the action and demanded an international conference on Bosnia. After decades of low-level activity, pan-Slavic forces inside Russia mobilized in opposition. Mass demonstrations broke out across the continent. Rome took advantage of the situation by reversing its friendship with Vienna. Berlin officials were surprised and appalled. The British were especially angry, denouncing the violation of an international agreement signed by both Austria and Britain. France denounced the scheme. Turkey was surprised by the unexpected development, but was quieted by the cash payment. By far the angriest reaction came from Serbia, which called for revenge, and began setting up secret guerrilla bands, plotting insurrection and other clandestine activities in the annexed Bosnia and its capital,
Sarajevo. All across Europe the chief blame was placed on Berlin, not Vienna. Europeans feared the powerful German army and took the episode as proof of its expansionist intentions. Berlin now realized it stood alone, with Austria its only friend. It decided it would firmly support Austria despite doubts about the wisdom of annexing Bosnia; Berlin explicitly warned St Petersburg that continued demands for an international conference constituted a hostile action and increased the risk of war with Germany. Russia backed down. Thanks to the German intervention, Austria achieved short-term diplomatic success in taking control of Bosnia. In the long run, however, Germany and Austria both made too many enemies, as the battle lines of World War I started to harden.
Exchange of letters On 2 July 1908, Russian Foreign Minister Alexander Izvolsky sent a letter to Austro-Hungarian Foreign Minister Alois Aehrenthal and proposed a discussion of reciprocal changes to the
Treaty of Berlin in favour of the Russian interest in the
Straits of Constantinople and Austro-Hungarian interests in the annexation of Bosnia-Herzegovina and the
Sanjak of Novi Pazar. On 14 July Aehrenthal responded with guarded acceptance of the proposed discussions. On 10 September, after long and complex discussions within the Imperial Government discussing the Izvolsky proposals to Austria-Hungary, Aehrenthal outlined a slightly different set of counter-proposals to him: he proposed that in exchange for a friendly Russian attitude when Austria-Hungary annexed Bosnia-Herzegovina, Austria-Hungary would then withdraw its troops from the Sanjak. The letter then went on to offer to discuss, as a separate matter, the Straits question, on a friendly basis. Aehrenthal proposed that should agreement on Bosnia-Herzegovina be reached, his Government would not – should the Russians subsequently propose to assert a right of their Black Sea fleet to both use and protect their access to the Mediterranean through the Bosporus – automatically decide with the other powers to support collectively the Ottoman Empire's opposition (up to and including war) to such a proposal.
Meeting at Buchlau On 16 September, Izvolsky and Aehrenthal met face-to-face at
Buchlau Castle in
Moravia, the private residence of Count Leopold Berchtold, ambassador of Austria-Hungary in Saint Petersburg. No minutes were taken during these private meetings, which lasted a total of six hours. Izvolsky accepted the responsibility to write up the conclusions of the meetings and forward them to Aehrenthal. On 21 September, Aehrenthal wrote to Izvolsky asking for this document, to which Izvolsky replied two days later that the document had been sent to the Czar for approval. This document, if it ever existed, has never been produced.
Aehrenthal’s version of the agreement By Aehrenthal's account given by Albertini, Izvolsky agreed that Russia would maintain "a friendly and benevolent attitude" if Austria-Hungary were to annex Bosnia-Herzegovina. Reciprocally, should Russia move to open "the Straits to single ships of war", Austria-Hungary would maintain a benevolent attitude. The two agreed that a likely consequence of the annexation was that Bulgaria, which was
de facto independent since 1878, would declare its formal independence from the Ottoman Empire. Austria-Hungary would offer no territorial concessions to Serbia or Montenegro, but if they supported the annexation then Austria-Hungary would not oppose Serbian expansion in the Balkans, and would support the Russian demand to revise Article 29 of the Treaty of Berlin which restricted Montenegrin sovereignty. The parties agreed that "these changes could receive sanction after negotiation with the Porte and the Powers", but "there would be no more talk of Bosnia-Herzegovina." Annexation would probably take place at the beginning of October. The original of Aehrenthal's account has not been found and so historians have had to make do with an undated office copy of the document.
Izvolsky’s version On 30 September, Austria-Hungary informed Izvolsky, who was in Paris at the time, that the annexation would take place on 7 October. On 4 October, Izvolsky prepared a report at the request of the British Ambassador to France,
Francis Bertie. Izvolsky stated that his position was that annexation was a matter to be settled between the signatories to the Treaty of Berlin. With the compensation of Austro-Hungarian withdrawal from the Sanjak of Novi Pazar, Russia would not consider the annexation as reason to go to war, but Russia and other governments would insist on changes to the Treaty favorable to themselves, including opening the Straits (Russia's interest), Bulgarian independence, territorial concessions to Serbia, and abolition of restrictions on Montenegrin sovereignty under article 29. ==Annexation==