I agree, Rick
It is a trick question. How can you say what the mission was when it was never stated as such. Also, one may mean what was the "real" mission. And so on.
I think it is all about Israeli control of the American political system and Arab oil and land.
But I know this is an oversimplification.
There are many factions that have a stake.
You can't leave out the Russians and the Chinese from just about any world politics.
Many people forget that oil corporations also had much to gain. In the short run, the most thus far.
But long term motives point to Israel.
They have the most to gain in both natural resources and strategic positioning.
They are now strategically positioned to control our government and, very soon, the arab peninsula.
That mission is still ongoing, though.