A third good reason to level now - answer questions later.
The article talks about how they could conceal these missles on a "cargo ship".
There is an easy answer for that. Sink all of their cargo ships when they leave port.
NK is a totalitarian dictatorship. There is absolutely ZERO reason to allow such a government to exist in the 21st century.
The WORLD should establish that all governments must have democratically elected governments subject to the will of their people and any countries that refuse to comply will be open to attack.
If the WORLD does not do this, the USA should impose it.
Totalitarian dictatorships represent a clear and present danger.