Hussein bin Ali, Sharif of Mecca
From July 1915 to March 1916, a series of ten letters were exchanged between Hussein bin Ali, Sharif of Mecca, and Lieutenant Colonel Sir Henry McMahon, British High Commissioner to Egypt. In the letters – particularly that of 24 October 1915 – the British government agreed to recognize Arab independence after the war in exchange for the Sharif of Mecca launching the Arab Revolt against the Ottoman Empire. The area of Arab independence was defined to be "in the limits and boundaries proposed by the Sherif of Mecca", with the exception of "portions of Syria" lying to the west of "the districts of Damascus, Homs, Hama and Aleppo"; conflicting interpretations of this description was to cause great controversy in subsequent years.