Wrong much as you would like it to true. Iran was part of the Ottoman empire, or at least parts of it where.
Uh, no, actually, t wasn't. Here's the borders of Iran in 1914. And in 1922. They are the same borders they have today.
Egypt was part of the Ottoman empire and had to be granted borders by the LoN after 1817.
There was no League of nations in 1817. Or 1917 in case you try to claim that was a typo. In fact, the British had taken over Egypt in the 19th century. It's how they were able to loot all the archaeological treasures and build the Suez Canal.
It was the three mandated powers Russia, France and Britain that controlled the land until such a time as the nations could stand on their own feet.
Wrong again. By 1917, Russia was out of the War because the Commies took over. France and England did divy up someone else's land, which was pretty shitty of them, but that didn't make it right. Nor their attempt to solidify their hold on Palestine by transplanting a bunch of European Jews there.