Nicky Haley needs to stop dealing at the UN.  

She's playing right into Jong Un's hands.

Ramp up the economic sanctions, Jong Un ramps up the missile tests, and says, "What are you going to do about it?"

It's becoming clear that past Presidents and their administrations understood this was the likely result.  So, they played the "calm tensions and don't provoke" game.

Trump played big body.  Now look.