A press of the button summons a staff member to bring Trump a Coke. During an interview, he pointed it out, and described its appearance as “ominous.”

In another interview, Trump was quoted as saying, “No no, everyone thinks it is,” when asked if the button was a nuclear launch button.

He reportedly drank about a dozen Diet Cokes per day.

Trump also warned North Korea about his “bigger and more powerful” nuclear button.

The New York Times – Inside Trump’s Hour-by-Hour Battle for Self-Preservation
Time – President Trump Presses a Button in the Oval Office to Get a Coke
Business Insider – Trump’s presidential desk has a tiny red button that he presses to order Coke
Yahoo News – Donald Trump has a button on his desk to summon a butler to bring him a Coke