What about a naval blockade of Saudi Arabia? Nothing goes in. Nothing goes out.
I had rather see a full scale intel war launced against any Saudi financing Wahabism now and in the past.
If any Saudi gets involved in financing and pushing this Jihadist terrorism, let them wake up some morning with no money in their bank and off shore accounts.
That would send a very fast and chilling message to the rich Islamonazis who finance the Islamokazis.