Donald J. Trump is everywhere, all the time.

He governs like a reality television host who has wandered into the Oval Office and decided the cameras should never be switched off. He holds court in cabinet rooms surrounded by journalists. He speaks in superlatives, threats, jokes, and half-finished ideas. He says things no other modern leader would dare say out loud.

Many see him as a threat to global stability. Others see him as a truth-teller, tearing down a corrupt establishment.