North Korea also wants to improve their economic conditions

North Korea also wants to improve their economic conditions.

Vietnam, Laos, and Cuba want to improve their economy.
What is the difference between those countries and North Korea?

Vietnam, Laos, Cuba opened thier doors to the world and improve economic cooperation with the world.

The most important thing of North Korea is keep their political stability.
So they continue to have and improve more nuclear powers.

What should South Korea should do?

I think South Korea do not speak loud about the collapse of North Korea,
because this is not North Korea wants to hear.

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