South Koreans and North Koreans are family and related to each other for thousands of years

So, the problem now is the South Koreans  relatives are being and have been starved to death by Kim Jong Un and his relatives now since around 1950. So, 23 million people in North Korea have always been underfed and starving since 1950 now and maybe 2 million people have had enough to eat all that time.

So, imagine your relatives are being starved to death since 1950. How would you feel as South Koreans. It wouldn't be at all like Americans see all this at all.

For us, we aren't related biologically to North Koreans "Generally speaking". For us, it is only about not having millions of our own people nuked primarily.

So, when push comes to shove "like now" of course South Korea and the U.S. are NOT going to be on the same page.

In the end we have to protect U.S. cities from North Korean nukes no matter what South Korea thinks.

It is simply about U.S. and world survival at this point.