in the related links box below I posted the official article regarding US policy against North Korea.
There is no South Korean nuclear program. It is North Korea which has an illegal nuclear program.
The US is strongly opposed to the North Korean nuclear weapons program and has been trying very hard to discourage North Korea from building nuclear weapons, although as we have seen, North Korea is building them anyway, in defiance of all forms of international pressure from the US or the UN.
The North Korean nuclear program began under Kim Jong-Il when he took power in the 1990s; this caused international sanctions against him, which cut aid. This along with lack of Soviet support and economic mismanagement created a famine that starved thousands. The height of North Korea's economy began in the 1960s and came to a close after the death of Kim Il-Sung in 1994. During this time there were no sanctions against them, because there was not a nuclear program. Using the theory of associations, Kim Jong-Il's nuclear program crippled the economy.
Probably....
Kwang Ho Chun has written: 'North Korea's nuclear question' -- subject(s): Nuclear weapons, Nuclear facilities, Nuclear nonproliferation, Military policy, Foreign relations
The nuclear tests in North Korea have absolutely nothing to do with "popular culture", "folk culture" or "language". They are simply an expression of the foreign policy and quixotic form of government that prevails in North Korea.
Because North Korea, as a communist government violates human rights and because of their stance on nuclear weapons.
The population of Korea Nuclear Fuel is 696.
Korea Nuclear Fuel was created in 1982.
The Korean War is when Korea split and therfore sparking a rivalry
Most probably, the threats are an excuse to keep North Korea's people united against aforeign enemy so that they won't rebel against their government.
They say it is a way of making up defenses against the South, but the events of the past few years suggest that they want the world to see them as a real country and not as a joke resulting of WWII. They are always in for exchanging their nuclear program for economic support from other Asian countries as well as the U.S.A.