Actually Donald Trump has been golfing all this while in his young presidency, He is going to destabilize the area over there by sending the air craft carriers over there and just saw n the news that the North Koreans says they will respond with a nuclear war.
As far as I know the rocket North Korea is not able to reach America. What can they do? Bomb carrier? I doubt it. I think that all the power of North Korea is nothing more than a bluff.
Do not think so narrowly. America has a lot of military bases, with a huge number of US citizens, as well as allies that have agreements with the US. Thus, North Korea can easily harm America, with a huge number of victims.