As someone with limited foreign policy knowledge, don't we want a Saudi collapse? Wahhabism was state-sponsored by the Saudis, the underlying extremist religious movement behind Al-Qaeda and ISIS. So it seems to me that the Saudi regime is something we would all really want to go away.

I also found it kind of ridiculous that the author mentioned the Obama administration's decision to leave the area as a cause for destabilization. What the hell does the world want us to do? If we police everything, we get the reputation we've earned of being Big Brother/Big Bully. If we take a more laissez faire approach, now the world thinks we aren't doing enough to help? We're damned if we do, damned if we don't.