Also, since NK has threatened the US with little mat ( a small gift ) the US could conclude that any missile launch coming from NK is making good on that threat -but that is for DT to decide- and since such determination is governed by a time limit of seconds after the missile launch, the US might be able to justify military action if NK launches any other missile in any direction. But as DT stated " We'll sea."
Also, DT strategy against NK is becoming seen with pressure on China and Russia by not stopping Japan and South Korea from having have nuclear missiles which is in the back yard of Russia and China -very close- unless they cooperate in collapsing NK.