Keeping the oil flowing by playing off one 'ally' against another is actually not as immoral as men like Michael Moore and Noam Chomsky and their followers make it seem.
It has kept the lights on and brought prosperity to millions of people for almost a century.
Long queues at petrol stations, planned power-cuts, three-day working weeks, mass unemployment and crippling inflation. That is what happens when Middle East policy fails as it did in the 70s.
It's so easy to stand in judgement of those who have to make the hard choices. Many of those decisions have indeed been idiotic and in a few cases catastrophic but remember that not taking action is also a choice.
Where would we be now if the UN led by the USA hadn't liberated Kuwait and allowed Saddam to threaten other oil producing countries? The second Iraq war also was not illegal. It was covered by UN resolution. It was the overthrow of a monster and the defense of Kurds and Marsh Arabs. It was the execution of the peace that was criminally incompetent. But the real blame must be placed at the feet of the succession of petty-minded, corrupt and incompetent ME leaders who care only for the enrichment of their family/clan/tribe/religious division.
The Saudi regime is indeed appalling. But what are you going to do if we piss them off and they turn off the oil, or Iran closes the Straits of Hormuz?
Criticising foreign policy is childsplay. Making better decisions (and not with the wisdom of hindsight) requires qualities all too often lacking in our leaders.
The title and OP of this thread are disconnected from your subsequent topic and do you a disservice if you stand by them. In your self-proclaimed skepticism you have displayed astonishing gullibility.
ETA - we are approaching the time when we will be able to turn our backs on the black gold and ME tyrants can go back to ruling over empty desert kingdoms. Worryingly many of them have spent their money on sophisticated weaponry. It will be quite a show.