Uh, act of war ring a bell??
We now have a policy of preemptive strikes with out current administration. Are we not smarter to take out their capabilities before they test fire a missile into Hawaii?
On top of that, is not NK breaking treaties, UN resolutions (yes I know, a joke) etc by testing these missiles? While I understand it would be an act of war, sometimes you've got to hit first before the enemy has the capability to hit you hard.