Furthermore, and more importantly, the promises made by the British to Husayn in the Husayn-McMahon Correspondence of 1915 and 1916 led Husayn to think that if he were to lead a successful revolt against the Ottomans, the British would help him establish an Arab Caliphate encompassing most of the Arabian Peninsula stretching as far north as present-day Turkey. Although the British could not promise a few districts that they had already pledged to give the French, the pieces seemed to be falling into place for Sharif Husayn, and he prepared to launch the Arab Revolt.[4]