So he's the one to blame for disregarding historical tribal and religious boundaries and causing the current mess.
The very same. I hadn't realized that he died so Young.
It is a fascinating story of geopolitical intrigue, strategically a resounding success for France and England. If the readers have the time it is an important event that preceded the Balfour Declaration, and enabled France to play an undeserving role in subsequent world events, allowed the British to control the nascent oil industry and, most importantly, to secretly ease the United States out of a central role in the Middle East for the next 50 years...
That's why it was a secret agreement.