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. Bertie told the British Foreign Minister Edward Grey that he felt Izvolsky was not being completely honest about the context whereby these understandings had come to be reached through his "diplomacy." Annexation On 6 October, the day after Bulgaria declared its independence from the Ottoman Empire, Emperor Franz Joseph announced to the people of this Ottoman territory (that had been occupied by Austria for 30 years) his determination to recognize and grant them an autonomous and constitutional regime, under his authority as their annexing sovereign. The following day, Austria-Hungary announced its withdrawal