While many across the world are nervous at the prospect of President Donald Trump pressing a big red button in his office, it has emerged he does this on a daily basis.

A rectangular box on his desk, containing the button, has long been used by commanders-in-chief to communicate with White House staffers.

And it has now turned out that Trump uses it to order glasses of Coca-Cola, delivered by a butler.

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President Trump in the Oval Office with a bottle of Coca Cola. It has emerged that he presses a red button in order to order one

The President's use of the button to satisfy his sweet tooth was revealed by Associated Press journalist Julian Pace, who wrote: 'A man accustomed to wealth and its trappings, Trump has embraced life in the Executive Mansion, often regaling guests with trivia about the historic décor.

'With the push of a red button placed on the Resolute Desk that presidents have used for decades, a White House butler soon arrived with a Coke for the president.'

While his predecessor Barack Obama famously worked out in the White House gym and First Lady Michelle led a healthy eating campaign, Trump is well known to be a lover of fast food.

While on the campaign trail last year, he posted a picture of himself enjoying a Kentucky Fried Chicken, and in February 2016 described Big Macs and Quarter Pounders as 'great stuff' at a CNN-organized event.