I can understand that Trump doesn't care tensions between North and South Korea, since his home country is extremely far away from the disputing area.
But, what made us puzzled is that the prime minister of Japan and certain percentage of Japan's citizens don't worry about it, though the country is neighboring to Korean Peninsula. Rather than that, they hope extermination of North Korea by US attacks.
If US tries to bomber North Korea, it will affect a lot on Japan. Most of the international trade between Japan and other countries will be suspended by unsafe situations in Japan and S.Korea. And then, it will make food price skyrocket, because of lack of imported food.
Once war happens, it's difficult to stop, due to infinitively chained tragedy. That's what we should remember.