Anglo-Ottoman Convention of 1913 this agreement would ensure British support on other more pressing issues, such as dealing with invasion by other European powers and conflicts in other parts of the Ottoman Empire. Furthermore, British pressures led the Ottomans to abandon the proposed extension of the railway line to Kuwait and instead opt for a Basra terminus. Plans for a Basra terminus created a new series of demands on behalf of the British, including the Ottoman renunciation of Qatar, and delineating its role in the wider Persian Gulf waters. Britain had wanted to conclude agreements with Sheikh of Qatar Jasim al-Thani about illicit arms
Transformation of the Ottoman Empire military ventures could occasionally lead to escalation, as in 1592-3 when the Long War was provoked by the Ottoman governor of Bosnia's conquest of Bihać. In contrast with their Hungarian and Safavid frontiers, the Ottomans generally did not seek to expand further north from the Black Sea, being concerned primarily with its defense and the security of its sea lanes. The Ottomans maintained a series of fortresses along the Black Sea's northern shore, in the territory of modern Ukraine. Major sites were located in Akkerman, Özü, and Azak. Also of critical importance for the northern frontier was the Ottoman vassal