Three from his inner circle leaked this treasure.
The shove incident with the PM of Montenegro is emblematic of Trumps problem now and going forward. Trump has no respect for anyone even just a hairs breadth less powerful than he,  he seems to get some pleasure from humiliating them publicly.
Think of the thousands of people in his circle of influence who fear and loath him, all of whom would "leak" embarrassing details in  heartbeat.
I find it humorous that he thinks standards at US fast-food operations are so high it is the best way to get "germ free" food. I expect when an order comes in from Trump Tower the minimum wage staff are lining up to see what bodily fluids they can apply to his bucket of chicken or burger.
What goes around, comes around.