Thomas Friedman is a journalist of considerable reputation.

He might, in the words of Donald J. Trump, be an “enemy of the people,” but the New York Times columnist has a well-established base of knowledge of world affairs.

Consider his take on the president’s use of Twitter as a primary form of communication.

Friedman appeared this morning on “Meet the Press” and he asserted that Trump’s “moral authority” is being damaged by his random rants that go out in the wee hours from wherever he happens to be at the moment.

He noted that the president is going to Europe soon to meet with other heads of government and heads of state. They are our allies. Our friends. Our partners.

How will the U.S. president respond to these meetings? What might he say about President So-and-So or about Prime Minister What’s-His-Name?

Does the president’s Twitter fetish diminish the trust that these world leaders have in the head of the greatest nation on Earth?

Friedman believes Trump’s use of this social medium ultimately could cause great damage to this country’s standing among other world leaders who depend on America to be the source of reason, strength and wisdom.

Trump’s demonstrated careless use of Twitter undermines all of it.

The president is playing a dangerous game.