In 1867, Berat became a sanjak in Yannina (Yanya) vilayet. Ottoman "vilayets" were usually named after their capital-thus the Basra "vilayet" was southern Iraq. The empire was divided into vilayets, with a governor assigned to each vilayet. Bulgarians lived in the southern half of Kosovo vilayet. Finally, from the mid-19th century it was part of the vilayet of Sidon. It became the head of a sanjak in the Ottoman Erzurum Vilayet. The remaining deportees were under the protection of governor of Angora Vilayet. Bolu was part of the Kastamonu Vilayet of the Ottoman Empire. Armenian forces fought against the attempts to massacre the Armenian population in the Van Vilayet. It was administered as the southernmost territory of the Beirut Vilayet. It comprised the territories of Kosovo Vilayet, Monastir Vilayet, Shkoder Vilayet and Janina Vilayet. Sana'a became the administrative capital of Yemen Vilayet. Under the Ottomans Urfa was part (Sanjak) of the Aleppo Vilayet. The irredentist claim in Greece are Chameria, parts of Epirus, the historical Vilayet of Janina. Aleppo became the centre of the newly constituted Vilayet of Aleppo in 1866.