Better safe than sorry. Even if we never have to use this better defense system we will still have it to make us safer and you can't go wrong with that. Diplomacy will not work with NK. The only think Kim understands is military power. If anything I think we should strike them before they strike us. The only way to put a stop to this madness is to cut the head off the snake and we should do that by showing them how a nuke really works by displaying the power of a good old US nuke right in their capital.