This is, at the end of the day, and ankle biter that we’re trying to find an excuse to squish. I don’t think it’s about getting the American people on board. When it comes to NK, they have been for a long time. I think it’s about China.
And it is looking that that particular issue may have been taken care of.
China is not ready for a wider war. Most of their military technology improvements are just leaving the drawing boards and not really in full deployment. China does not want the North to be an American base. China will first bluff and bluster to scare Trump off. When that doesn’t work they will invade and take the little shrimp off the throne themselves. (The present approach is to create a fertile ground for the NK dictator to be removed by a coup. That hasn’t, thus far, worked and time is running out.)
China used NK as a tool. But times and the need for the tool have moved on. Now, that tool is a big eyesore and a huge potential problem. China needs to control the change or their border cities will be swamped with millions of starving and sick refugees.
Look for China to be the ground and the US and South Korea to be the air power.