Trump's psychotic meltdown exposed something terrifying — but not about him

Last Sunday night, Donald Trump sent a deranged letter on White House stationery to Norwegian Prime Minister Jonas Gahr Støre. It shocked the world more than any of his antics of the past decade.

In it, Trump unleashed a madman’s rant at Gahr, an innocent bystander, declaring that “I no longer feel an obligation to think purely of Peace” as a consequence of having been denied a Nobel Peace Prize. And there was this:

“The World is not secure unless we have Complete and Total Control of Greenland.”

By Monday morning...