حسين بن علي الهاشمي
While Sykes and Picot were in negotiations, discussions were proceeding in parallel between Hussein bin Ali, Sharif of Mecca, and Lieutenant Colonel Sir Henry McMahon, British High Commissioner to Egypt (the McMahon–Hussein Correspondence). Their correspondence comprised ten letters exchanged from July 1915 to March 1916, in which 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.