All humans are selfish. Most humans are tribals. Most humans draw their lines somewhere, I draw mine at the nation-state and have consciously chosen to do so. I care more about Americans than I do foreigners. Much as I care more about my family than I do strangers. That is biology and sociology in action. In any case if South Korea and Japan have to be sacrificed to save America then so be it.

I don't say this to troll or to dehumanize others. Please understand that on a base level I care about Japanese, South Koreans and even North Koreans much as other people. On a base level I believe all people are equal. On a practical level though? When it's your tribe vs mine? I chose mine.