In August, Ottoman forces established a provisional government of Western Thrace at Komotini to pressure Bulgaria to make peace. Bulgaria sent a three-man delegation—General Mihail Savov and the diplomats Andrei Toshev and Grigor Nachovich—to Constantinople to negotiate a peace on 6 September. The Ottoman delegation was led by Foreign Minister Mehmed Talat Bey, assisted by Naval Minister Çürüksulu Mahmud Pasha and Halil Bey. Although Russia tried to intervene throughout August to prevent Edirne from becoming Turkish again, Toshev told the Ottomans at Constantinople that "he Russians consider Constantinople their natural inheritance. Their main concern is that when Constantinople falls into their hands it shall have the largest possible hinterland. If Adrianople is in the possession of the Turks, they shall get it too." Resigned to losing Edirne, the Bulgarians played for Kırk Kilise . Both sides made competing declarations: Savov that "Bulgaria, who defeated the Turks on all fronts, cannot end this glorious campaign with the signing of an agreement which retains none of the battlefields on which so much Bulgarian blood has been shed," and Mahmud Pasha that "hat we have taken is ours." In the end, none of the battlefields were retained in the Treaty of Constantinople of 30 September. Bulgarian forces finally returned south of the Rhodopes in October. The Radoslavov government continued to negotiate with the Ottomans in the hopes of forming an alliance. These talks finally bore fruit in the Secret Bulgarian-Ottoman Treaty of August 1914. On 14 November 1913 Greece and the Ottomans signed a treaty in Athens bringing to a formal end the hostilities between them. On 14 March 1914, Serbia signed a treaty in Constantinople, restoring relations with the Ottoman Empire and reaffirming the 1913 Treaty of London. No treaty between Montenegro and the Ottoman Empire was ever signed.

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What event happened first, the Ottomans signing a treaty in Athens, of Serbia signing a treaty in Constantinople?