Negotiation to get rid of North Korean neclear weapons is necessary

Some people believe that nuclear weapons can not prevent the use of neclear weapons.
Is it a correct idea?
No.
North Korea keep nuclear weapons because they are afraid of losing their government.
They want to keep their government from enemies.

North Korea can get rid of their neclear weapons, if South Korea is a friend to them.
How?

South Korea should negotiate with North Korea to get rid of their nuclear weapons.

http://www.hani.co.kr/arti/opinion/column/725493.html