The Sykes-Picot agreement basically fucked over anyone who was white or Jewish.

At the end of World War 1 it carved up the middle east into areas controlled by the allied powers (France, Russia, England). Each of those sides puppeted their zones of control with varying degrees of civility, while the original groups that still had to live there day-to-day radicalized over being controlled by outsiders.

That was exacerbated by the Balfour Declaration in 1917, in which Britain basically said “tough titty-toenails, Arabs. We’ve promised to give the Jews a homeland, and we’ll have to take it from you.”