President Harry Truman supposedly said, “If you want a friend in Washington, get a dog.” There’s scant evidence he actually spoke those words, but it’s sound advice for President Trump.

A White House that seemingly courts adversaries from its ranks due to its West Wing revolving-door policy has found an enemy extraordinaire in John Bolton. The former national security adviser’s new book burns Trump so badly, its cover should warn readers to wear oven mitts while holding it.