Just read this post on the BBC,
This is exactly what Mickey Mouse tried to do with us....
Trump doesn't fire people...
Anthony Zurcher
BBC North America reporter
I suspect President Trump will certainly comment on Sir Kim Darroch's resignation at some point - usually he likes to celebrate the exercise of his power at moments like this.
And it's all very familiar. Donald Trump doesn't fire people, even in his own administration. What he does is make it so uncomfortable for them that they eventually resign of their own volition. We've seen it time and time again, and that's what happened here.
Mickey has made working conditions so bad for staff and is hoping we will just leave of our own volition. That way it saves on severance and leave more money for him.