From The Israel-Arab Reader, (3rd Ed.) edited, Walter Laqueur, Bantam Books, 1976.
"Sir Henry McMahon (1862-1949), British High Commissioner in Cairo, negotiated in 1915-16 with Husain Ibn Ali, the Sherif of Mecca. The British government promised to support his bid for the restoration of the Caliphate (and leadership in the Arab world)...."
I have received your letter of the 29th Shawal, 1333, with much pleasure and your expression of friendliness and sincerity have given me the greatest satisfaction.
I regret that you should have received from my last letter the impression that I regarded the question of limits and boundaries with coldness and hesitation; such was not the case, but it appeared to me that the time had not yet come when that question could be discussed in a conclusive manner.
I have realised, however, from your last letter that you regard this question as one of vital and urgent importance. I have, therefore, lost no time in informing the Government of Great Britain of the contents of your letter, and it is with great pleasure that I communicate to you on their behalf the following statement, which I am confident you will receive with satisfaction. -
With the above modification, and without prejudice to our existing treaties with Arab chiefs, we accept those limits.
As for those regions lying within those frontiers wherein Great Britain is free to act without detriment to the interests of her ally, France, I am empowered in the name of the Government of Great Britain to give the following assurances and make the following assurances and make the following reply to your letter:
I am convinced that this declaration will assure you beyond all possible doubt of the sympathy of Great Britain towards the aspirations of her friends the Arabs and will result in a firm and lasting alliance, the immediate results of which will be the expulsion of the Turks from the Arab countries and the freeing of the Arab peoples from the Turkish yoke, which for so many years has pressed heavily upon them.
I have confined myself in this letter to the more vital and important questions, and if there are any other matters dealt with in your letters which I have omitted to mention, we may discuss them at some convenient date in the future.
It was with very great relief and satisfaction that I heard of the safe arrival of the Holy Carpet and the accompanying offerings which, thanks to the clearness of your directions and the excellence of your arrangements, were landed without trouble or mishap in spite of the dangers and difficulties occasioned by the present sad war. May God soon bring a lasting peace and freedom of all peoples.
I am sending this letter by the hand of your trusted and excellent messenger, Sheikh Mohammed ibn Arif ibn Uraifan, and he will inform you of the various matters of interest, but of less vital importance, which I have not mentioned in this letter.
(Signed): A. HENRY MCMAHON.