The most important factor in middle east policy by far is the pro-Israeli lobby and nothing else.
No out middle east policy is not about the Oil. Both Saudi Arabia and the Iraq government we installed have nationalized their oil fields. Also, if it’s about Oil, it would make no sense to block Iran from exporting it, or to have a was in Iraq which disrupted oil supplies.
It is also not about “Military Industrial Complex” Raytheon and Boeing could make a killing if we had a bloated space exploration budget but we don’t. Also, our military support and cooperation with Israel is helping Israeli arms industry which is competing with ours.