Korea has repeatedly declared that it now possesses nuclear

Korea has repeatedly declared in recent months that it now possesses nuclear weapons.
And I think Korean bomb is not a diplomatic bluff. As it has been reported with the help of spy satellites US intelligence service has fixed discharges of krypton-85 in air around Yongbyon's nuclear reactor, which is Korean main mean of obtaining plutonium for its nuclear weapons. And US analysts have estimated that used nuclear fuel rods could yield enough plutonium for at least two nuclear bombs, if North Korea has the necessary reprocessing technology. Kim Yong-nam, the national assembly president said that they would continue to develop the "nuclear deterrent", which North Korea needs to fend off the "hostile Bush administration". But he stressed that "Korea is ready to freeze production of nuclear weapons if the USA vows not to attack it or overthrow Kim Jong-il's regime". One can sense the voice of Peking in his words. It's Chinese typical style of behavior, isn't it? Peking always prefers to act, staying in the background. In reality exactly China is interested in Korean nuclear arsenal that "serves as main deterrent to evert a war and ensure security in the Korean Peninsula and the rest of north-east Asia". Surely, Peking will never agree to have united and US controllable Korea close by own borders. And it is an added reason for probable Chinese nuclear engineering's' assistance to Pyongyang in the field of reprocessing used nuclear fuel rods to make the ingredients for Korean's nuclear arms.