English: Map issued as an annex to the Anglo-Turkish Convention of 3 June 1914. This map of the southwestern tip of the Arabian Peninsula shows the demarcation line agreed upon between 1902 and 1904 by the Anglo-Turkish Boundary Commission which had been tasked to demarcate the respective Ottoman and British spheres of influence in South Arabia. This is one of four maps showing the whole length of the demarcation line drawn by the Commission.
The area bordered in yellow, approximately 550 sq. miles, was the area of Yemen that the Turkish government committed not to alienate in any way to a foreign power. Britain was concerned that France, Italy or Germany might attempt to acquire this strategic area facing the British island of Perim at the entrance of the Red Sea. Cape Bab el-Mandeb was also known as Sheikh Said, and is generally known today as Ras Menheli.