Donald John Trump’s delusions keep mounting up.

Take what he said again this weekend, that the White House is “well-oiled.” It’s all going swimmingly, according to the president. No worries at all. The executive branch is functioning precisely as it should and the president — he hastens to add — is doing more than any president in history.

A new book, “Fear,” written by legendary Washington journalist Bob Woodward, tells a different story. And, oh yes, there’s that now-infamous anonymous essay published in The New York Times that tells essentially the same tale that Woodward has laid out.

And that is? The White House is rife with chaos. Staff members are in near-panic mode. The president cannot be trusted to make the right decisions every time.

Donald Trump says it’s all a ruse. He said Woodward has made up all the things he reports in “Fear.” The mystery essayist is a “coward” who faces a Justice Department investigation, according to Trump.

That is the sign of a well-oiled machine running the executive branch of the federal government? Hardly, man. It’s the sign of a White House and a president with a shallow bench that cannot fill key posts.

Yep. The White House is in serious disarray.

The anonymous essay doesn’t tell us much new about the White House operation, say observers in Washington, D.C. As for the Woodward book, it, too, tells of a chaotic atmosphere.

Trump can believe what he says, I suppose. What galls me and perhaps millions of other Americans is that he expects others to believe what he says as well.

I do not believe him. The White House has become something just short of a loony bin.