On the other, he needs to make sure that Kim has a way out that saves face.
DT could have done that to begin with, then, instead of his rhetoric, now the US has to retreat to the position before DT's threat and negotiate something to make NK stop from shooting missiles over other people's houses. NK called DT bluff and now the US has to eat it's words -unless of course DT intended to make good on his threats, he blundered.
No comment from the White House yet on the missile.