Hussein bin Ali, Sharif of Mecca
The correspondence is composed of ten letters that were exchanged from July 1915 to March 1916 between Hussein bin Ali, Sharif of Mecca and Lieutenant Colonel Sir Henry McMahon, British High Commissioner to Egypt. Whilst there was some military value in the Arab manpower and local knowledge alongside the British Army, the primary reason for the arrangement was to counteract the Ottoman declaration of "jihad" ("holy war") against the Allies, and to maintain the support of the 70 million Muslims in British India (particularly those in the Indian Army that had been deployed in all major theatres of the wider war). 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 were to cause great controversy in subsequent years. One particular dispute, which continues to the present, is the extent of the coastal exclusion.