Anglo-Ottoman Convention of 1913 was to have “complete administrative autonomy.” This region was formed by “a semicircle with the town of Kuwayt in the center, the Khawr al-Zubayr at the northern extremity and al-Qurrayin at the southern extremity” (Article 5). This also included the surrounding islands of Warba and Bubiyan, which were major bargaining points for the British who viewed the Ottoman military posts on the islands as a threat. The green line defined the region in which the Sheikh of Kuwait would exercise the administrative rights of an Ottoman "kaymakam". The tribes situated in that area were “recognized within the dependence of the
Anglo-Ottoman Convention of 1913 intervene in matters of the Gulf, of which the British desired to retain a monopoly. The Ottomans were willing to drop all claims to Bahrain, in which they had never been able to maintain anything but a symbolic role, but not Qatar. As a question of sovereignty, the Ottomans argued that the empire had always exercised effective sovereignty over the peninsula and could not justify the abandonment of territory which it had never formally renounced. Yet under considerable pressure it renounced claims to both (Articles 11 & 13) and a blue line was established to define the territorial limits of