The US government is far more war-hungry then North Korea! One of these days one of the warmongering nuts in the White House is gonna push the atomic button and start World War III. I don't know whether that warmongering nut will be a Democrat or Republican, but it will not matter because everyone on the planet will be just as dead.
North Korea wants to be left alone. The more that South Korea and the United States bully North Korea the more that North Korea's going to want the atomic bomb to defend itself.
If North Korea does not have the right to the atomic bomb then it follows that the United States does not have the right to the atomic bomb. If the United States has the right to the atomic bomb then North Korea has a right to the atomic bomb too!
North Korea wants the bomb to get concessions from the West -- something we amazingly do time and time again.