[DesertRhino]

They could be utterly devastated from the air. But our government dances like a monkey on a stick for the Saudis. The Saudis want a sunni victory over Assad.
The Sunnis love having us fight Shiites for them.

But if we wanted to get real serious, we could bomb their oil production and transport in an afternoon. That would hit the pocketbook hard.
Then we could force Turkey to cut off its clandestine support of ISIS.
But of course, that risks Turks pointing out how much we helped ISIS in the beginning with the Obama nonsense of supporting the “moderate” al qeida Syrian opposition. We gave them money, non lethal aid, and by all appearances, lethal aid through the Benghazi-Turkey-northern Syria ratline.

We are now in a pickle.

[Paul R.]

But if we wanted to get real serious, we could bomb their oil production and transport in an afternoon. That would hit the pocketbook hard.

No need. Push oil & gas production on (US) federally owned lands and offshore. Slap high tariffs on non-North American oil imports and use those revenues to subsidize U.S. production. Continue to push excess production & transport capability with a view to export to Europe and Japan. Encourage and enable reasonably(!) clean coal power production in the US instead of taking it off the table.

[Jim Noble]

They could be utterly devastated from the air.

False.

Then we could force Turkey to cut off its clandestine support of ISIS.

Also false.

We are now in a pickle

You betcha.