Looks like good negotiation to me. South Korea’s foreign minister even credited him for his work on the deal (which is still ongoing).
Hate Trump all you want, but fact of the matter is he’s a damn good salesman, marketer and negotiator. It’s how he won the primaries and the presidency. And now it’s how he’s winning diplomacy.
You can have a problem with his tactics, but at this point the results are really starting to speak for themselves.