North Korea has been backed into the proverbial corner by sanctions, and by six party talks that have led to joint military operations.
When you are backed into the corner, you see only two options, and both are untenable. One is to continue to be squeezed and the other is to come out over the top of a larger and possibly force. Mankind always has three options, but when you are in a crisis, you see only these two. What is unseen is the choice to go up, and that is to do what is in everyone's best interest. Because you are 180 degrees from where you think you are, you turn around and go through what can be considered a little door in the corner. You let go of what is dragging you into the abyss, but that is not your children, your resources or anything that is rightfully yours.
This is what North Korea appears to be doing. They are letting go of their nuclear weapons, turning around and joining the debate on the plan for the international government, which treats them as equals to all the other nations, which is what the Olympics also does. They are choosing to go up, and to do what is in everyone's best interest.
Those who have relied on the existing structure for their life and livelihood have resisted the creation of the proposed international government, and as the plan has progressed, they have gone through what can be considered their end of life crisis. The plan has gone through the planning stages on the mental level, and the resistance to the plan pushed mankind to the brink of nuclear war. The existing structure, based on power games, has proved it cannot end or prevent wars. Can they offer a better plan? Can they offer a plan that benefits everyone?
Mankind now has three options. We can ignore the crises and pass them on to future generations, and it will take seven generations--based on the planning process--to undo the damage that has been done. We can allow those who rely on the existing structure to start a nuclear war. We can all let go of the old structure based on power grabs and come into the new, and work together to create the international government, which will treat everyone fairly and equally.