Our position will just get worse (so will the whole worlds) the longer it goes on.
Don’t kid yourself China is really in a much worse position than we are when it comes to Nk and they are not happy about it.

How do we deal with a NK with capable sub’s?

There are no good options.

And no we can’t stop playing (they will absolutely never stop no matter what we do)

The country that is being extorted the most is China.