What's going on in the middle East?
This is basically it! Although Germany was categorically not allowing France to have anything so Hashemite Syria more happened out of necessity. Iraq isn't quite in the British sphere (it's Shia-run, for one thing), and Palestine is going somewhat OTL, although High Commissioner Lawrence is trying to restrict Jewish immigration as tensions continue to rise.Looks like the British still beat the Ottomans, but didn't feel the need to give France anything.
Purple is presumably a Hashemite state, dark green Saudi Arabia, and light green is Iraq, less Kurdistan (perhaps also Hashemite, but separate from Syria + Hedjaz).
I also see a Kurdish protectorate as well as South Yemen, Trucial States and Qatar, and colonies in Lebanon, Palestine (almost certainly Jewish), North Yemen, Oman, and Kuwait.