The North Korean regime is a cancer in the heart of Northeast Asia that must be ripped out- even if it costs Seoul in the process.
Why?
It's a cancer. Cancers don't go away; they just metastasize. Yesterday, it would have cost Seoul. Today, Seoul and Tokyo. Tomorrow, Seoul, Tokyo, Beijing, Los Angeles and San Francisco. What you have is a highly unstable regime with steadily progressing rocket technology. One day they will have working ICBMs. Maybe not this year or next year, but that is the trajectory. The sooner this thing is ripped out the better we can take stock of our existing losses.