Charles Krauthammer concurred that North Korea poses the gravest national-security threat because Kim Jong-un may be acquiring intercontinental ballistic missiles able to strike America soil:
It’s a threat to the actual existence of San Francisco. Syria is an issue, but it’s not a threat to the lives of a million Americans. This is a regime that is completely unpredictable. And remember, our ability to predict nuclear stuff — going all the way back to the end of the Second World War — is terrible. We did not predict the Russians in ‘49, the Chinese in ’64, India, or Pakistan. We had no idea; we were caught by surprise.
There are only three options. One is a preemptive strike on the missile launchers, which will inevitably, immediately precipitate a land war. They’re going to invade South Korea. The other is to shoot down the missile using our defensive systems, which we probably can do, although who knows. The Democrats have a tendency to go easy on testing the defensive missiles. The third is not what Trump thinks, which is economic pressure. It’s not going to work on the Chinese. We have tried that, regarding North Korea. There is one thing I believe that will deter them: We announce that we look favorably on Japan and South Korea acquiring defensive nukes. That will scare the hell out of the Chinese, and it might move them to do something.