What Happens When Saudi Arabia Turns Off the Cash Spigot?

I am going to trot out an esoteric formula from advanced quantitative finance.

Ready?

A lot of money

minus

A little bit more than that

equals

Less than zero.

Counterintuitive, I know, but it’s true.

To take a random case study, the Saudi royal family has a number of valuable properties — fine art, vacation homes, military hardware, etc. — and among the…