Casey Tompkins points out the strategic difficulties of attacking the Saudis. I've always known it was a bad idea to really piss off 1.3 billion Muslims by attacking the holy land. I've also wondered how we could come up with a satisfactory causus belli when people didn't want us to attack Iraq even though we were still technically at war with Iraq and they were violating the terms of the cease fire all the time. It's also been very puzzling how we could turn on an ally who had been cooperating with us against Iraq. Not to mention the oil problem.
But Casey shows how utterly ignorant the idea is from a military standpoint.