Quote from Firevine »^ Precisely that.
The missile barrage on the empty airfield in Syria occurred while Xi Jinping was here in the states. Trumps moves are showing that he's not going to play these games, and it's making China step up and say "Maybe we should stop playing too then". 80% of North Koreas trade is with China, so when China says "enough is enough", this little dog and pony show is over.
That would be a lot more comforting if that was actually Trumps motivation behind the strike. And the strike acutually doing something useful.
As all the indications we have are that Trump doesn't think that far ahead and the strike was only good at generating headlines. Not to mention that he either deliberately lied about a Carrier groups movements or lost track of it there are very few reasons to feel to comfortable at the moment.