Some recent Trump tweets:

I am very disappointed in China. Our foolish past leaders have allowed them to make hundreds of billions of dollars a year in trade, yet…
— Donald J. Trump (@realDonaldTrump) July 29, 2017

…they do NOTHING for us with North Korea, just talk. We will no longer allow this to continue. China could easily solve this problem!
— Donald J. Trump (@realDonaldTrump) July 29, 2017

So Trump tried to outsource his diplomacy to China, and now he’s grousing that they didn’t do what they never promised they would, and they didn’t finish what Trump neglected to ask for.

He’s right.  You just can’t find good help these days.