How to treat North Korea's "missile crisis"?

The rocket launch pad has been built, but the rocket can be temporarily changed into a long-range missile. Because the US military radar can't find out exactly what it is, the situation is very stiff now. If it is a missile, it depends on where it is hit. If it's just a deterrent, that's fine. If it hits a city in South Korea, don't say anything. Even if North Korea confesses immediately, it is useless not to engage in nuclear weapons, and the war will definitely break out in an all-round way. The United States will certainly help, but not too much.