Kim Young-sam — South Korean Politician born on December 20, 1927,

Kim Young-sam was a South Korean politician and democratic activist, who served as the seventh President of South Korea from 1993 to 1998. From 1961, he spent almost 30 years as one of the leaders of the South Korean opposition, and one of the most powerful rivals to the authoritarian regimes of Park Chung-hee and Chun Doo-hwan... (wikipedia)

The blood and sweat shed by United States and United Nations troops proved to be the prime mover behind the realisation of freedom throughout the post-war period.
All of North Korea is a jail.
I don't think the current regime of South Korea will deal actively with the issue of North Korean defectors.
I feel very sorry for the one or two North Korean defectors who were caught by Chinese police while entering South Korean or foreign embassies in Beijing, but their arrest drew the whole attention of the world.
Once a major military confrontation occurs, North Korea will definitely be annihilated.