Just a couple points about this. 1. If the US did this, China would become quickly involved (they have stated already that if we strike first the will come to N. Korea's aid, If N. Korea struck first they would stand down) and South Korea would take a major hit. (My opinion, it is this certainty that has kept us from taking action prior to this.) Hundreds of thousands of lives, if not millions, could be lost, including US Military and their families. 2. The Thadd (not sure I got the acronym correct) system is not fully tested and in theory should work, but there is no guarantee that it would.

So my take on this? We need to be cautious and smart about this. I'm not sure our President is capable of that. I personally think that he is trying to incite a first strike by North Korea so he can strike back without China getting involved. Or, I could be completely wrong and he is just playing a dangerous game to force North Korea to back down. North Korea has already called his bluff and he made more threats in response. Who knows what he'll do next.